diff --git a/api/chalicelib/core/errors.py b/api/chalicelib/core/errors.py
index c22a51445..1c7ed94c9 100644
--- a/api/chalicelib/core/errors.py
+++ b/api/chalicelib/core/errors.py
@@ -502,7 +502,7 @@ def search(data: schemas.SearchErrorsSchema, project_id, user_id):
                                     FROM (SELECT error_id,
                                              name,
                                              message,
-                                             COUNT(DISTINCT COALESCE(user_id,user_uuid))  AS users,
+                                             COUNT(DISTINCT COALESCE(user_id,user_uuid::text))  AS users,
                                              COUNT(DISTINCT session_id) AS sessions,
                                              MAX(timestamp)             AS max_datetime,
                                              MIN(timestamp)             AS min_datetime