diff --git a/squinnondation/hazel.py b/squinnondation/hazel.py
index b31cb57..69f617d 100644
--- a/squinnondation/hazel.py
+++ b/squinnondation/hazel.py
@@ -314,7 +314,6 @@ class Squirrel(Hazelnut):
             return
         elif isinstance(key, int):
             # Unmanaged complex key
-            self.add_system_message(str(key))
             return
         elif key != "\n":
             # Insert the pressed key in the current message