diff --git a/block.c b/block.c
index c491edf..9818052 100644
--- a/block.c
+++ b/block.c
@@ -4376,7 +4376,7 @@
                 ret = co.ret;
             }
         }
-        if (ret) {
+        if (ret && ret != -ENOTSUP) {
             return ret;
         }