diff --git a/block/io.c b/block/io.c
index b413727524db5a762ae7fff11b853e86cbdc2db5..a73153ddfe2b9c395f96f38ba58a069f8a71a874 100644
--- a/block/io.c
+++ b/block/io.c
@@ -2335,7 +2335,6 @@ int coroutine_fn bdrv_co_pdiscard(BlockDriverState *bs, int64_t offset,
     assert(max_pdiscard >= bs->bl.request_alignment);
 
     while (bytes > 0) {
-        int ret;
         int num = bytes;
 
         if (head) {