diff --git a/block/blk-lib.c b/block/blk-lib.c
index 64974b1..2b461b4 100644
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@ -59,7 +59,7 @@
 	 * granularity
 	 */
 	max_discard_sectors = min(q->limits.max_discard_sectors, UINT_MAX >> 9);
-	if (!unlikely(!max_discard_sectors)) {
+	if (unlikely(!max_discard_sectors)) {
 		/* Avoid infinite loop below. Being cautious never hurts. */
 		return -EOPNOTSUPP;
 	} else if (q->limits.discard_granularity) {