diff --git a/plugins/btchipwallet.py b/plugins/btchipwallet.py
index 44defd3e7..c9ac18d0a 100644
--- a/plugins/btchipwallet.py
+++ b/plugins/btchipwallet.py
@@ -284,7 +284,7 @@ class BTChipWallet(NewWallet):
         redeemScripts = []        
         signatures = []
         preparedTrustedInputs = []
-        changePath = None
+        changePath = "" 
         changeAmount = None
         output = None
         outputAmount = None