diff --git a/diff.txt b/diff.txt
new file mode 100644
index 00000000..b82b8c8d
--- /dev/null
+++ b/diff.txt
@@ -0,0 +1,25 @@
+diff --git a/pkg/fieldpath/path.go b/pkg/fieldpath/path.go
+index d607318..d20b2b4 100644
+--- a/pkg/fieldpath/path.go
++++ b/pkg/fieldpath/path.go
+@@ -242,7 +242,19 @@ func memberShapeRef(
+ 	}
+ 	switch shapeRef.Shape.Type {
+ 	case "structure":
+-		return shapeRef.Shape.MemberRefs[memberName]
++		// We are looking for a member of a structure. We need to loop through
++		// the structure's members to find the member with the name we are
++		// looking for.
++		// Since the ACK fields and the AWS SDK fields are not exactly the same,
++		// we need to EqualFold the member names. e.g in ECS Service resource,
++		// AWSVPCConfiguration is the field name in the ACK model, but
++		// AwsVpcConfiguration is the field name in the AWS SDK model.
++		for memberRefName, memberRefShape := range shapeRef.Shape.MemberRefs {
++			if strings.EqualFold(memberRefName, memberName) {
++				return memberRefShape
++			}
++		}
++		return nil
+ 	case "list":
+ 		return memberShapeRef(&shapeRef.Shape.MemberRef, memberName)
+ 	case "map":
diff --git a/pkg/fieldpath/path.go b/pkg/fieldpath/path.go
index d6073187..7513ad4d 100644
--- a/pkg/fieldpath/path.go
+++ b/pkg/fieldpath/path.go
@@ -242,7 +242,17 @@ func memberShapeRef(
 	}
 	switch shapeRef.Shape.Type {
 	case "structure":
-		return shapeRef.Shape.MemberRefs[memberName]
+		// We are looking for a member of a structure. Since the ACK fields and
+		// the AWS SDK fields may have different casing (e.g AWSVPCConfiguration
+		// and AwsVpcConfiguration) we need to perform a case insensitive
+		// comparison to find the correct member reference.
+		for memberRefName, memberRefShape := range shapeRef.Shape.MemberRefs {
+			if strings.EqualFold(memberRefName, memberName) {
+				return memberRefShape
+			}
+		}
+		// If no matching member is found, return nil.
+		return nil
 	case "list":
 		return memberShapeRef(&shapeRef.Shape.MemberRef, memberName)
 	case "map":
diff --git a/pkg/fieldpath/path_test.go b/pkg/fieldpath/path_test.go
index 180b4025..5127b25a 100644
--- a/pkg/fieldpath/path_test.go
+++ b/pkg/fieldpath/path_test.go
@@ -148,6 +148,12 @@ func TestShapeRef(t *testing.T) {
 						},
 					},
 				},
+				"WeirdlycasEdType": &awssdkmodel.ShapeRef{
+					ShapeName: "WeirdlycasEdType",
+					Shape: &awssdkmodel.Shape{
+						Type: "string",
+					},
+				},
 			},
 		},
 	}
@@ -220,4 +226,11 @@ func TestShapeRef(t *testing.T) {
 
 	// Calling ShapeRef should not modify the original Path
 	require.Equal("Author.Books.ChapterPageCounts.PageCount", p.String())
+
+	// Case-insensitive comparisons...
+	p = fieldpath.FromString("Author.WeirdlyCasedType")
+	ref = p.ShapeRef(authShapeRef)
+	require.NotNil(ref)
+	require.Equal("WeirdlycasEdType", ref.ShapeName)
+	require.Equal("string", ref.Shape.Type)
 }