diff --git a/api/chalicelib/core/events.py b/api/chalicelib/core/events.py
index db515d995..933e3f800 100644
--- a/api/chalicelib/core/events.py
+++ b/api/chalicelib/core/events.py
@@ -432,7 +432,7 @@ def __get_autocomplete_table(value, project_id):
                                         AND value ILIKE %(value)s
                                     LIMIT 5)""")
     with pg_client.PostgresClient() as cur:
-        query = cur.mogrify("UNION ALL".join(sub_queries) + ";",
+        query = cur.mogrify(" UNION ".join(sub_queries) + ";",
                             {"project_id": project_id, "value": helper.string_to_sql_like(value),
                              "svalue": helper.string_to_sql_like("^" + value)})
         cur.execute(query)