diff --git a/great_expectations/expectations/core/expect_column_values_to_be_of_type.py b/great_expectations/expectations/core/expect_column_values_to_be_of_type.py
index 9b4eb4261dcc..b9c08dc8c560 100644
--- a/great_expectations/expectations/core/expect_column_values_to_be_of_type.py
+++ b/great_expectations/expectations/core/expect_column_values_to_be_of_type.py
@@ -566,7 +566,7 @@ def _validate(
         actual_column_type = [
             type_dict["type"]
             for type_dict in actual_column_types_list
-            if type_dict["name"] == column_name
+            if type_dict["name"].casefold() == column_name.casefold()
         ][0]
 
         if isinstance(execution_engine, PandasExecutionEngine):