diff --git a/src/Mod/Path/PathScripts/PathThreadMillingGui.py b/src/Mod/Path/PathScripts/PathThreadMillingGui.py
index 66acac9387..fab21692a7 100644
--- a/src/Mod/Path/PathScripts/PathThreadMillingGui.py
+++ b/src/Mod/Path/PathScripts/PathThreadMillingGui.py
@@ -203,7 +203,7 @@ class TaskPanelOpPage(PathCircularHoleBaseGui.TaskPanelOpPage):
 Command = PathOpGui.SetupOperation('Thread Milling',
         PathThreadMilling.Create,
         TaskPanelOpPage,
-        'Path-ThreadMilling',
+        'Path_ThreadMilling',
         QtCore.QT_TRANSLATE_NOOP("PathThreadMilling", "Thread Milling"),
         QtCore.QT_TRANSLATE_NOOP("PathThreadMilling", "Creates a Path Thread Milling operation from features of a base object"),
         PathThreadMilling.SetupProperties)