1 files changed, 3 insertions, 3 deletions
diff --git a/block.c b/block.c
index 8f177504d4..09d4c6bd25 100644
--- a/block.c
+++ b/block.c
@@ -6995,13 +6995,13 @@ void bdrv_refresh_filename(BlockDriverState *bs)
     if (bs->exact_filename[0]) {
         pstrcpy(bs->filename, sizeof(bs->filename), bs->exact_filename);
     } else {
-        QString *json = qobject_to_json(QOBJECT(bs->full_open_options));
+        GString *json = qobject_to_json(QOBJECT(bs->full_open_options));
         if (snprintf(bs->filename, sizeof(bs->filename), "json:%s",
-                     qstring_get_str(json)) >= sizeof(bs->filename)) {
+                     json->str) >= sizeof(bs->filename)) {
             /* Give user a hint if we truncated things. */
             strcpy(bs->filename + sizeof(bs->filename) - 4, "...");
         }
-        qobject_unref(json);
+        g_string_free(json, true);
     }
 }