diff --git a/lib/common-functions b/lib/common-functions
index 29dd25fd..5ba7560a 100644
--- a/lib/common-functions
+++ b/lib/common-functions
@@ -105,5 +105,5 @@ function mount_qcow_image() {
 
     WORK_DIR=$(mktemp -d)
     map_nbd $1
-    sudo mount $NBD_DEV $WORK_DIR
+    sudo mount ${NBD_DEV}p1 $WORK_DIR
 }