diff --git a/src/storage/storage_util.c b/src/storage/storage_util.c
index 9e1b63a436..61a87b37b6 100644
--- a/src/storage/storage_util.c
+++ b/src/storage/storage_util.c
@@ -1918,7 +1918,7 @@ virStorageBackendUpdateVolInfo(virStorageVolDefPtr vol,
                                                  withBlockVolFormat,
                                                  VIR_STORAGE_VOL_OPEN_DEFAULT |
                                                  VIR_STORAGE_VOL_OPEN_NOERROR,
-                                                 readflags)) < 0)
+                                                 readflags)) == -1)
         return ret;
 
     return 0;