diff --git a/terminatorlib/keybindings.py b/terminatorlib/keybindings.py
index 6c413e28..e1aa9656 100644
--- a/terminatorlib/keybindings.py
+++ b/terminatorlib/keybindings.py
@@ -5,6 +5,7 @@ from terminatorlib.config import err
 
 class KeymapError(Exception):
   def __init__(self, value):
+    Exception.__init__(self, value)
     self.value = value
     self.action = 'unknown'