diff --git a/contrib/postgres_fdw/postgres_fdw.c b/contrib/postgres_fdw/postgres_fdw.c
index 649f15113d0..16c2979f2d0 100644
--- a/contrib/postgres_fdw/postgres_fdw.c
+++ b/contrib/postgres_fdw/postgres_fdw.c
@@ -6820,7 +6820,7 @@ void
 process_pending_request(AsyncRequest *areq)
 {
 	ForeignScanState *node = (ForeignScanState *) areq->requestee;
-	PgFdwScanState *fsstate = (PgFdwScanState *) node->fdw_state;
+	PgFdwScanState *fsstate PG_USED_FOR_ASSERTS_ONLY = (PgFdwScanState *) node->fdw_state;
 	EState	   *estate = node->ss.ps.state;
 	MemoryContext oldcontext;