diff --git a/terminatorlib/container.py b/terminatorlib/container.py
index e45b07fa..3c87c17d 100755
--- a/terminatorlib/container.py
+++ b/terminatorlib/container.py
@@ -83,7 +83,7 @@ class Container(object):
         """Remove a widget from the container"""
         raise NotImplementedError('remove')
 
-    def hoover(self, widget):
+    def hoover(self):
         """Ensure we still have a reason to exist"""
         raise NotImplementedError('hoover')