diff --git a/contrib/pg_stat_statements/pg_stat_statements.c b/contrib/pg_stat_statements/pg_stat_statements.c
index 9778407cba3..31ef85402e0 100644
--- a/contrib/pg_stat_statements/pg_stat_statements.c
+++ b/contrib/pg_stat_statements/pg_stat_statements.c
@@ -1812,6 +1812,8 @@ pg_stat_statements_internal(FunctionCallInfo fcinfo,
 		int			i = 0;
 		Counters	tmp;
 		double		stddev;
+		
+		/* Using int64 for queryid to match the bigint type of the queryid column in pg_stat_statements */
 		int64		queryid = entry->key.queryid;
 		TimestampTz stats_since;
 		TimestampTz minmax_stats_since;