1 files changed, 1 insertions, 1 deletions
diff --git a/qemu-nbd.c b/qemu-nbd.c
index e080fb7c75..e4f00e26dd 100644
--- a/qemu-nbd.c
+++ b/qemu-nbd.c
@@ -959,7 +959,7 @@ int main(int argc, char **argv)
     } else {
         if (fmt) {
             options = qdict_new();
-            qdict_put(options, "driver", qstring_from_str(fmt));
+            qdict_put_str(options, "driver", fmt);
         }
         blk = blk_new_open(srcpath, NULL, options, flags, &local_err);
     }