diff --git a/src/bin/scripts/reindexdb.c b/src/bin/scripts/reindexdb.c
index b15745256ff..8bab74b5917 100644
--- a/src/bin/scripts/reindexdb.c
+++ b/src/bin/scripts/reindexdb.c
@@ -340,7 +340,7 @@ reindex_one_database(ConnParams *cparams, ReindexType type,
 		{
 			case REINDEX_SCHEMA:
 				Assert(user_list != NULL);
-				/* fall through */
+				pg_fallthrough;
 
 			case REINDEX_DATABASE: