diff --git a/src/backend/storage/aio/method_io_uring.c b/src/backend/storage/aio/method_io_uring.c
index 67b06ce4ed42c..3f214e42767ed 100644
--- a/src/backend/storage/aio/method_io_uring.c
+++ b/src/backend/storage/aio/method_io_uring.c
@@ -140,6 +140,9 @@ pgaio_uring_submit(uint16 num_staged_ios, PgAioHandle **staged_ios)
 
 		sqe = io_uring_get_sqe(uring_instance);
 
+		if (!sqe)
+			elog(ERROR, "io_uring submission queue is unexpectedly full");
+
 		pgaio_io_prepare_submit(ioh);
 		pgaio_uring_sq_from_io(ioh, sqe);