diff --git a/safe_transaction_service/safe_messages/serializers.py b/safe_transaction_service/safe_messages/serializers.py
index 05b873abd..6da8ded26 100644
--- a/safe_transaction_service/safe_messages/serializers.py
+++ b/safe_transaction_service/safe_messages/serializers.py
@@ -16,7 +16,7 @@
 from safe_transaction_service.utils.serializers import get_safe_owners
 
 from .models import SIGNATURE_LENGTH, SafeMessage, SafeMessageConfirmation
-from .utils import get_hash_for_message, get_safe_message_hash_for_message
+from .utils import get_hash_for_message, get_safe_message_hash_and_preimage_for_message
 
 
 # Request serializers
@@ -109,7 +109,7 @@ def validate(self, attrs):
         signature = attrs["signature"]
         attrs["safe"] = safe_address
         message_hash = get_hash_for_message(message)
-        safe_message_hash = get_safe_message_hash_for_message(
+        safe_message_hash, safe_message_preimage = get_safe_message_hash_and_preimage_for_message(
             safe_address, message_hash
         )
         attrs["message_hash"] = safe_message_hash
@@ -120,7 +120,7 @@ def validate(self, attrs):
             )
 
         safe_signatures = SafeSignature.parse_signature(
-            signature, safe_message_hash, safe_hash_preimage=message_hash
+            signature, safe_message_hash, safe_hash_preimage=safe_message_preimage
         )
         owner, signature_type = self.get_valid_owner_from_signatures(
             safe_signatures, safe_address, None
diff --git a/safe_transaction_service/safe_messages/utils.py b/safe_transaction_service/safe_messages/utils.py
index 480c182c0..20b2d3db6 100644
--- a/safe_transaction_service/safe_messages/utils.py
+++ b/safe_transaction_service/safe_messages/utils.py
@@ -1,7 +1,7 @@
 from typing import Any, Dict
 
 from eth_account.messages import defunct_hash_message
-from eth_typing import ChecksumAddress, Hash32
+from eth_typing import ChecksumAddress, Hash32, HexStr
 from safe_eth.eth import get_auto_ethereum_client
 from safe_eth.eth.eip712 import eip712_encode_hash
 from safe_eth.safe import Safe
@@ -15,8 +15,8 @@ def get_hash_for_message(message: str | Dict[str, Any]) -> Hash32:
     )
 
 
-def get_safe_message_hash_for_message(
+def get_safe_message_hash_and_preimage_for_message(
     safe_address: ChecksumAddress, message_hash: Hash32
-) -> Hash32:
+) -> Tuple[Hash32, HexStr]:
     safe = Safe(safe_address, get_auto_ethereum_client())
-    return safe.get_message_hash(message_hash)
+    return safe.get_message_hash_and_preimage(message_hash)