diff --git a/block/commit.c b/block/commit.c
index e210e86bac..0029b31944 100644
--- a/block/commit.c
+++ b/block/commit.c
@@ -135,7 +135,7 @@ static int coroutine_fn commit_run(Job *job, Error **errp)
     }
 
     if (base_len < len) {
-        ret = blk_truncate(s->base, len, false, PREALLOC_MODE_OFF, 0, NULL);
+        ret = blk_co_truncate(s->base, len, false, PREALLOC_MODE_OFF, 0, NULL);
         if (ret) {
             return ret;
         }