diff --git a/poky/scripts/lib/devtool/standard.py b/poky/scripts/lib/devtool/standard.py
index 261d642..d140b97 100644
--- a/poky/scripts/lib/devtool/standard.py
+++ b/poky/scripts/lib/devtool/standard.py
@@ -531,6 +531,7 @@
 
     initial_rev = None
 
+    appendexisted = False
     recipefile = d.getVar('FILE')
     appendfile = recipe_to_append(recipefile, config)
     is_kernel_yocto = bb.data.inherits_class('kernel-yocto', d)