diff --git a/scos_actions/signals.py b/scos_actions/signals.py
index ca82139d..66d2a64a 100644
--- a/scos_actions/signals.py
+++ b/scos_actions/signals.py
@@ -14,9 +14,6 @@
 # Provides argument 'action'
 register_action = Signal()
 
-# Provides argument 'action'
-register_action = Signal()
-
 # Provides argument 'signal_analyzer'
 register_signal_analyzer = Signal()