diff --git a/disco/bot/parser.py b/disco/bot/parser.py
index e9cabfc..4f7d267 100644
--- a/disco/bot/parser.py
+++ b/disco/bot/parser.py
@@ -139,9 +139,10 @@ class ArgumentSet(object):
             try:
                 return typ(ctx, value)
             except Exception as e:
+                exc = e
                 continue
 
-        raise e
+        raise exc
 
     def append(self, arg):
         """