diff --git a/class/core/public.py b/class/core/public.py
index 96eafa2e4..73fa15da4 100755
--- a/class/core/public.py
+++ b/class/core/public.py
@@ -76,7 +76,7 @@ def getBackupDir():
 
 def setBackupDir(bdir):
     file = getRunDir() + '/data/backup.pl'
-    return writeFile(file, wdir)
+    return writeFile(file, bdir)
 
 
 def getOs():