diff --git a/src/Mod/Path/PathScripts/PathDrillingGui.py b/src/Mod/Path/PathScripts/PathDrillingGui.py
index ed7a8e714d..ca7e1924ef 100644
--- a/src/Mod/Path/PathScripts/PathDrillingGui.py
+++ b/src/Mod/Path/PathScripts/PathDrillingGui.py
@@ -138,7 +138,6 @@ class TaskPanelOpPage(PathCircularHoleBaseGui.TaskPanelOpPage):
         signals.append(self.form.peckEnabled.stateChanged)
         signals.append(self.form.toolController.currentIndexChanged)
         signals.append(self.form.coolantController.currentIndexChanged)
-        signals.append(self.form.coolantController.currentIndexChanged)
         signals.append(self.form.ExtraOffset.currentIndexChanged)
         signals.append(self.form.enableRotation.currentIndexChanged)