diff --git a/lib/wallet.py b/lib/wallet.py
index 8b2cd2e72..bd5901a32 100644
--- a/lib/wallet.py
+++ b/lib/wallet.py
@@ -75,6 +75,8 @@ class WalletStorage(PrintError):
                 data = f.read()
         except IOError:
             return
+        if not data:
+            return
         try:
             self.data = json.loads(data)
         except: