diff --git a/squinnondation/hazel.py b/squinnondation/hazel.py
index d56f9d9..b31cb57 100644
--- a/squinnondation/hazel.py
+++ b/squinnondation/hazel.py
@@ -270,12 +270,16 @@ class Squirrel(Hazelnut):
         """
         Process the key press from the user.
         """
-        if key == "\x7f":  # backspace
+        if key == "\x7f" or key == curses.KEY_BACKSPACE:  # backspace
             # delete character at the good position
             if self.input_index:
                 self.input_index -= 1
                 self.input_buffer = self.input_buffer[:self.input_index] + self.input_buffer[self.input_index + 1:]
             return
+        elif key == curses.KEY_DC:  # key
+            if self.input_index < len(self.input_buffer):
+                self.input_buffer = self.input_buffer[:self.input_index] + self.input_buffer[self.input_index + 1:]
+            return
         elif key == curses.KEY_LEFT:
             # Navigate in the message to the left
             self.input_index = max(0, self.input_index - 1)
@@ -310,6 +314,7 @@ 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