diff --git a/src/backend/storage/ipc/dsm_impl.c b/src/backend/storage/ipc/dsm_impl.c
index 67e76b98fe..10a7a56875 100644
--- a/src/backend/storage/ipc/dsm_impl.c
+++ b/src/backend/storage/ipc/dsm_impl.c
@@ -923,7 +923,7 @@ dsm_impl_mmap(dsm_op op, dsm_handle handle, Size request_size,
 
 		/* Back out what's already been done. */
 		save_errno = errno;
-		close(fd);
+		CloseTransientFile(fd);
 		if (op == DSM_OP_CREATE)
 			unlink(name);
 		errno = save_errno;