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-rw-r--r--block/vvfat.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/block/vvfat.c b/block/vvfat.c
index 36f6ab4441..0701df49f4 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -2795,8 +2795,11 @@ static int enable_write_target(BDRVVVFATState *s)
     if (bdrv_create(bdrv_qcow, s->qcow_filename, options) < 0)
 	return -1;
     s->qcow = bdrv_new("");
-    if (s->qcow == NULL || bdrv_open(s->qcow, s->qcow_filename, BDRV_O_RDWR) < 0)
+    if (s->qcow == NULL ||
+        bdrv_open(s->qcow, s->qcow_filename, BDRV_O_RDWR, bdrv_qcow) < 0)
+    {
 	return -1;
+    }
 
 #ifndef _WIN32
     unlink(s->qcow_filename);