diff --git a/src/backend/executor/nodeGather.c b/src/backend/executor/nodeGather.c
index 513940477c02b77eb2a502d25e137d414dd6d31a..b368b48d01d839c76b6a871adc44595ddcc9aa96 100644
--- a/src/backend/executor/nodeGather.c
+++ b/src/backend/executor/nodeGather.c
@@ -392,7 +392,7 @@ gather_readnext(GatherState *gatherstate)
  *		accounted.
  * ----------------------------------------------------------------
  */
-void
+static void
 ExecShutdownGatherWorkers(GatherState *node)
 {
 	/* Shut down tuple queue readers before shutting down workers. */