diff --git a/query_classifier/qc_sqlite/builtin_functions.c b/query_classifier/qc_sqlite/builtin_functions.c
index cec511c25..9caf4479a 100644
--- a/query_classifier/qc_sqlite/builtin_functions.c
+++ b/query_classifier/qc_sqlite/builtin_functions.c
@@ -87,7 +87,7 @@ static const char* BUILTIN_FUNCTIONS[] =
     "subtime",
     "sysdate",
     "time",
-    "timediff"
+    "timediff",
     "timestamp",
     "timestampadd",
     "timestampdiff",