diff --git a/src/documents/conditionals.py b/src/documents/conditionals.py
index 23cb9c6af..07e6850fb 100644
--- a/src/documents/conditionals.py
+++ b/src/documents/conditionals.py
@@ -25,7 +25,7 @@ def suggestions_etag(request, pk: int) -> Optional[str]:
             return None
         _ = pickle.load(f)
         last_auto_type_hash: bytes = pickle.load(f)
-        return str(last_auto_type_hash) + str(settings.NUMBER_OF_SUGGESTED_DATES)
+        return f"{last_auto_type_hash}:{settings.NUMBER_OF_SUGGESTED_DATES}"
 
 
 def suggestions_last_modified(request, pk: int) -> Optional[datetime]:
diff --git a/src/documents/tests/test_api_documents.py b/src/documents/tests/test_api_documents.py
index a3d440699..7b81c8df0 100644
--- a/src/documents/tests/test_api_documents.py
+++ b/src/documents/tests/test_api_documents.py
@@ -1336,7 +1336,7 @@ class TestDocumentApi(DirectoriesMixin, DocumentConsumeDelayMixin, APITestCase):
         self.assertIn("ETag", response.headers)
         self.assertEqual(
             response.headers["ETag"],
-            f"\"b'thisisachecksum'{settings.NUMBER_OF_SUGGESTED_DATES}\"",
+            f"\"b'thisisachecksum':{settings.NUMBER_OF_SUGGESTED_DATES}\"",
         )
 
         mocked_pickle_load.rest_mock()