diff --git a/source/aws_imds_client.c b/source/aws_imds_client.c
index 5ea2b801..281b7ec4 100644
--- a/source/aws_imds_client.c
+++ b/source/aws_imds_client.c
@@ -124,10 +124,6 @@ struct aws_imds_client *aws_imds_client_new(
     }
 
     struct aws_imds_client *client = aws_mem_calloc(allocator, 1, sizeof(struct aws_imds_client));
-    if (!client) {
-        return NULL;
-    }
-
     if (aws_mutex_init(&client->token_lock)) {
         goto on_error;
     }
diff --git a/source/aws_signing.c b/source/aws_signing.c
index fe5610e2..d99f6059 100644
--- a/source/aws_signing.c
+++ b/source/aws_signing.c
@@ -339,9 +339,6 @@ struct aws_signing_state_aws *aws_signing_state_new(
     }
 
     struct aws_signing_state_aws *state = aws_mem_calloc(allocator, 1, sizeof(struct aws_signing_state_aws));
-    if (!state) {
-        return NULL;
-    }
 
     state->allocator = allocator;
 
diff --git a/source/credentials.c b/source/credentials.c
index 3340663d..d48c8246 100644
--- a/source/credentials.c
+++ b/source/credentials.c
@@ -103,9 +103,6 @@ struct aws_credentials *aws_credentials_new(
     }
 
     struct aws_credentials *credentials = aws_mem_acquire(allocator, sizeof(struct aws_credentials));
-    if (credentials == NULL) {
-        return NULL;
-    }
 
     AWS_ZERO_STRUCT(*credentials);
 
@@ -316,9 +313,6 @@ struct aws_credentials *aws_credentials_new_ecc(
     }
 
     struct aws_credentials *credentials = aws_mem_calloc(allocator, 1, sizeof(struct aws_credentials));
-    if (credentials == NULL) {
-        return NULL;
-    }
 
     credentials->allocator = allocator;
     credentials->expiration_timepoint_seconds = expiration_timepoint_in_seconds;
diff --git a/source/credentials_provider_anonymous.c b/source/credentials_provider_anonymous.c
index 62a9a659..3099ba5b 100644
--- a/source/credentials_provider_anonymous.c
+++ b/source/credentials_provider_anonymous.c
@@ -42,9 +42,6 @@ struct aws_credentials_provider *aws_credentials_provider_new_anonymous(
     struct aws_credentials_provider *provider = aws_mem_calloc(allocator, 1, sizeof(struct aws_credentials_provider));
 
     struct aws_credentials *credentials = aws_credentials_new_anonymous(allocator);
-    if (credentials == NULL) {
-        goto on_new_credentials_failure;
-    }
 
     aws_credentials_provider_init_base(provider, allocator, &s_aws_credentials_provider_anonymous_vtable, credentials);
 
@@ -53,10 +50,4 @@ struct aws_credentials_provider *aws_credentials_provider_new_anonymous(
     }
 
     return provider;
-
-on_new_credentials_failure:
-
-    aws_mem_release(allocator, provider);
-
-    return NULL;
 }
diff --git a/source/credentials_provider_cached.c b/source/credentials_provider_cached.c
index 300794f1..eb24b99a 100644
--- a/source/credentials_provider_cached.c
+++ b/source/credentials_provider_cached.c
@@ -256,10 +256,6 @@ struct aws_credentials_provider *aws_credentials_provider_new_cached(
         &impl,
         sizeof(struct aws_credentials_provider_cached));
 
-    if (!provider) {
-        return NULL;
-    }
-
     AWS_ZERO_STRUCT(*provider);
     AWS_ZERO_STRUCT(*impl);
 
diff --git a/source/credentials_provider_chain.c b/source/credentials_provider_chain.c
index b93e708c..adf19abc 100644
--- a/source/credentials_provider_chain.c
+++ b/source/credentials_provider_chain.c
@@ -146,6 +146,7 @@ struct aws_credentials_provider *aws_credentials_provider_new_chain(
     const struct aws_credentials_provider_chain_options *options) {
 
     if (options->provider_count == 0) {
+        aws_raise_error(AWS_ERROR_INVALID_ARGUMENT);
         return NULL;
     }
 
@@ -160,10 +161,6 @@ struct aws_credentials_provider *aws_credentials_provider_new_chain(
         &impl,
         sizeof(struct aws_credentials_provider_chain_impl));
 
-    if (!provider) {
-        return NULL;
-    }
-
     AWS_ZERO_STRUCT(*provider);
     AWS_ZERO_STRUCT(*impl);
 
diff --git a/source/credentials_provider_cognito.c b/source/credentials_provider_cognito.c
index ece91b8a..6a9b7e36 100644
--- a/source/credentials_provider_cognito.c
+++ b/source/credentials_provider_cognito.c
@@ -699,10 +699,6 @@ struct aws_credentials_provider *aws_credentials_provider_new_cognito(
         &impl,
         sizeof(struct aws_credentials_provider_cognito_impl));
 
-    if (!provider) {
-        return NULL;
-    }
-
     AWS_ZERO_STRUCT(*provider);
     AWS_ZERO_STRUCT(*impl);
 
diff --git a/source/credentials_provider_default_chain.c b/source/credentials_provider_default_chain.c
index 260784f4..2642911d 100644
--- a/source/credentials_provider_default_chain.c
+++ b/source/credentials_provider_default_chain.c
@@ -134,9 +134,7 @@ static struct default_chain_callback_data *s_create_callback_data(
     void *user_data) {
     struct default_chain_callback_data *callback_data =
         aws_mem_calloc(provider->allocator, 1, sizeof(struct default_chain_callback_data));
-    if (callback_data == NULL) {
-        return NULL;
-    }
+
     callback_data->allocator = provider->allocator;
     callback_data->default_chain_provider = provider;
     callback_data->original_callback = callback;
@@ -257,10 +255,6 @@ struct aws_credentials_provider *aws_credentials_provider_new_chain_default(
         &impl,
         sizeof(struct aws_credentials_provider_default_chain_impl));
 
-    if (!provider) {
-        return NULL;
-    }
-
     AWS_ZERO_STRUCT(*provider);
     AWS_ZERO_STRUCT(*impl);
 
diff --git a/source/credentials_provider_delegate.c b/source/credentials_provider_delegate.c
index 63cd6696..bdc10009 100644
--- a/source/credentials_provider_delegate.c
+++ b/source/credentials_provider_delegate.c
@@ -47,10 +47,6 @@ struct aws_credentials_provider *aws_credentials_provider_new_delegate(
         &impl,
         sizeof(struct aws_credentials_provider_delegate_impl));
 
-    if (!provider) {
-        return NULL;
-    }
-
     AWS_ZERO_STRUCT(*provider);
     AWS_ZERO_STRUCT(*impl);
 
diff --git a/source/credentials_provider_ecs.c b/source/credentials_provider_ecs.c
index 7d96cf3a..4bcf8c07 100644
--- a/source/credentials_provider_ecs.c
+++ b/source/credentials_provider_ecs.c
@@ -502,11 +502,6 @@ struct aws_credentials_provider *aws_credentials_provider_new_ecs(
         sizeof(struct aws_credentials_provider),
         &impl,
         sizeof(struct aws_credentials_provider_ecs_impl));
-
-    if (!provider) {
-        return NULL;
-    }
-
     AWS_ZERO_STRUCT(*provider);
     AWS_ZERO_STRUCT(*impl);
 
diff --git a/source/credentials_provider_environment.c b/source/credentials_provider_environment.c
index 791e7e2b..9426caec 100644
--- a/source/credentials_provider_environment.c
+++ b/source/credentials_provider_environment.c
@@ -65,9 +65,6 @@ struct aws_credentials_provider *aws_credentials_provider_new_environment(
     struct aws_allocator *allocator,
     const struct aws_credentials_provider_environment_options *options) {
     struct aws_credentials_provider *provider = aws_mem_acquire(allocator, sizeof(struct aws_credentials_provider));
-    if (provider == NULL) {
-        return NULL;
-    }
 
     AWS_ZERO_STRUCT(*provider);
 
diff --git a/source/credentials_provider_imds.c b/source/credentials_provider_imds.c
index 3d5e71f6..31d6cf97 100644
--- a/source/credentials_provider_imds.c
+++ b/source/credentials_provider_imds.c
@@ -71,10 +71,6 @@ struct aws_credentials_provider *aws_credentials_provider_new_imds(
         &impl,
         sizeof(struct aws_credentials_provider_imds_impl));
 
-    if (!provider) {
-        return NULL;
-    }
-
     AWS_ZERO_STRUCT(*provider);
     AWS_ZERO_STRUCT(*impl);
 
@@ -133,9 +129,7 @@ static struct imds_provider_user_data *s_imds_provider_user_data_new(
 
     struct imds_provider_user_data *wrapped_user_data =
         aws_mem_calloc(imds_provider->allocator, 1, sizeof(struct imds_provider_user_data));
-    if (wrapped_user_data == NULL) {
-        goto on_error;
-    }
+
     if (aws_byte_buf_init(&wrapped_user_data->role, imds_provider->allocator, 100)) {
         goto on_error;
     }
diff --git a/source/credentials_provider_process.c b/source/credentials_provider_process.c
index d043ff39..79467c04 100644
--- a/source/credentials_provider_process.c
+++ b/source/credentials_provider_process.c
@@ -230,10 +230,6 @@ struct aws_credentials_provider *aws_credentials_provider_new_process(
         &impl,
         sizeof(struct aws_credentials_provider_process_impl));
 
-    if (!provider) {
-        goto on_error;
-    }
-
     AWS_ZERO_STRUCT(*provider);
     AWS_ZERO_STRUCT(*impl);
 
diff --git a/source/credentials_provider_profile.c b/source/credentials_provider_profile.c
index cce4ddac..9b745beb 100644
--- a/source/credentials_provider_profile.c
+++ b/source/credentials_provider_profile.c
@@ -187,10 +187,6 @@ static struct aws_credentials_provider *s_create_profile_based_provider(
         &impl,
         sizeof(struct aws_credentials_provider_profile_file_impl));
 
-    if (!provider) {
-        return NULL;
-    }
-
     AWS_ZERO_STRUCT(*provider);
     AWS_ZERO_STRUCT(*impl);
 
diff --git a/source/credentials_provider_static.c b/source/credentials_provider_static.c
index 55154ee3..fcf3c423 100644
--- a/source/credentials_provider_static.c
+++ b/source/credentials_provider_static.c
@@ -45,9 +45,6 @@ struct aws_credentials_provider *aws_credentials_provider_new_static(
     const struct aws_credentials_provider_static_options *options) {
 
     struct aws_credentials_provider *provider = aws_mem_acquire(allocator, sizeof(struct aws_credentials_provider));
-    if (provider == NULL) {
-        return NULL;
-    }
 
     AWS_ZERO_STRUCT(*provider);
 
diff --git a/source/credentials_provider_sts.c b/source/credentials_provider_sts.c
index 0832cdee..731f2e5e 100644
--- a/source/credentials_provider_sts.c
+++ b/source/credentials_provider_sts.c
@@ -697,9 +697,6 @@ struct aws_credentials_provider *aws_credentials_provider_new_sts(
         sizeof(struct aws_credentials_provider_sts_impl));
 
     AWS_LOGF_DEBUG(AWS_LS_AUTH_CREDENTIALS_PROVIDER, "static: creating STS credentials provider");
-    if (!provider) {
-        return NULL;
-    }
 
     AWS_ZERO_STRUCT(*provider);
     AWS_ZERO_STRUCT(*impl);
diff --git a/source/credentials_provider_sts_web_identity.c b/source/credentials_provider_sts_web_identity.c
index 8dde03e3..f08e7655 100644
--- a/source/credentials_provider_sts_web_identity.c
+++ b/source/credentials_provider_sts_web_identity.c
@@ -988,9 +988,7 @@ static struct sts_web_identity_parameters *s_parameters_new(
 
     struct sts_web_identity_parameters *parameters =
         aws_mem_calloc(allocator, 1, sizeof(struct sts_web_identity_parameters));
-    if (parameters == NULL) {
-        return NULL;
-    }
+
     parameters->allocator = allocator;
 
     bool success = false;
diff --git a/source/credentials_provider_x509.c b/source/credentials_provider_x509.c
index 8917636a..2ec1339b 100644
--- a/source/credentials_provider_x509.c
+++ b/source/credentials_provider_x509.c
@@ -541,10 +541,6 @@ struct aws_credentials_provider *aws_credentials_provider_new_x509(
         &impl,
         sizeof(struct aws_credentials_provider_x509_impl));
 
-    if (!provider) {
-        return NULL;
-    }
-
     AWS_ZERO_STRUCT(*provider);
     AWS_ZERO_STRUCT(*impl);
 
diff --git a/source/credentials_utils.c b/source/credentials_utils.c
index 47ca8863..830116a1 100644
--- a/source/credentials_utils.c
+++ b/source/credentials_utils.c
@@ -275,6 +275,7 @@ struct aws_credentials *aws_parse_credentials_from_json_document(
     struct aws_json_value *document_root = aws_json_value_new_from_string(allocator, document);
     if (document_root == NULL) {
         AWS_LOGF_ERROR(AWS_LS_AUTH_CREDENTIALS_PROVIDER, "Failed to parse document as Json document.");
+        aws_raise_error(AWS_ERROR_INVALID_ARGUMENT);
         return NULL;
     }
 
@@ -284,6 +285,7 @@ struct aws_credentials *aws_parse_credentials_from_json_document(
             aws_json_value_get_from_object(document_root, aws_byte_cursor_from_c_str(options->top_level_object_name));
         if (!top_level_object) {
             AWS_LOGF_ERROR(AWS_LS_AUTH_CREDENTIALS_PROVIDER, "failed to parse top level object in json document.");
+            aws_raise_error(AWS_ERROR_INVALID_ARGUMENT);
             goto done;
         }
     }
diff --git a/source/signable.c b/source/signable.c
index 9b1d526f..59b674f6 100644
--- a/source/signable.c
+++ b/source/signable.c
@@ -139,10 +139,6 @@ struct aws_signable *aws_signable_new_canonical_request(
         &impl,
         sizeof(struct aws_signable_canonical_request_impl));
 
-    if (signable == NULL || impl == NULL) {
-        return NULL;
-    }
-
     AWS_ZERO_STRUCT(*signable);
     AWS_ZERO_STRUCT(*impl);
 
diff --git a/source/signable_chunk.c b/source/signable_chunk.c
index 8ce78504..43c64a7c 100644
--- a/source/signable_chunk.c
+++ b/source/signable_chunk.c
@@ -89,10 +89,6 @@ struct aws_signable *aws_signable_new_chunk(
     aws_mem_acquire_many(
         allocator, 2, &signable, sizeof(struct aws_signable), &impl, sizeof(struct aws_signable_chunk_impl));
 
-    if (signable == NULL || impl == NULL) {
-        return NULL;
-    }
-
     AWS_ZERO_STRUCT(*signable);
     AWS_ZERO_STRUCT(*impl);
 
diff --git a/source/signing_result.c b/source/signing_result.c
index b0f8eb90..1933333e 100644
--- a/source/signing_result.c
+++ b/source/signing_result.c
@@ -130,9 +130,6 @@ static struct aws_array_list *s_get_or_create_property_list(
     }
 
     struct aws_array_list *properties = aws_mem_acquire(result->allocator, sizeof(struct aws_array_list));
-    if (properties == NULL) {
-        return NULL;
-    }
 
     AWS_ZERO_STRUCT(*properties);
     struct aws_string *name_copy = aws_string_new_from_string(result->allocator, list_name);
diff --git a/tests/credentials_provider_utils.c b/tests/credentials_provider_utils.c
index 3ccd6182..9e787ed6 100644
--- a/tests/credentials_provider_utils.c
+++ b/tests/credentials_provider_utils.c
@@ -148,10 +148,6 @@ struct aws_credentials_provider *aws_credentials_provider_new_mock(
         &impl,
         sizeof(struct aws_credentials_provider_mock_impl));
 
-    if (!provider) {
-        return NULL;
-    }
-
     AWS_ZERO_STRUCT(*provider);
     AWS_ZERO_STRUCT(*impl);
 
@@ -330,10 +326,6 @@ struct aws_credentials_provider *aws_credentials_provider_new_mock_async(
         &impl,
         sizeof(struct aws_credentials_provider_mock_async_impl));
 
-    if (!provider) {
-        return NULL;
-    }
-
     AWS_ZERO_STRUCT(*provider);
     AWS_ZERO_STRUCT(*impl);
 
@@ -458,9 +450,6 @@ struct aws_credentials_provider *aws_credentials_provider_new_null(
     struct aws_credentials_provider_shutdown_options *shutdown_options) {
     struct aws_credentials_provider *provider =
         (struct aws_credentials_provider *)aws_mem_acquire(allocator, sizeof(struct aws_credentials_provider));
-    if (provider == NULL) {
-        return NULL;
-    }
 
     AWS_ZERO_STRUCT(*provider);