diff --git a/src/Mod/Draft/draftguitools/gui_trimex.py b/src/Mod/Draft/draftguitools/gui_trimex.py
index 88546b0716..47b449d641 100644
--- a/src/Mod/Draft/draftguitools/gui_trimex.py
+++ b/src/Mod/Draft/draftguitools/gui_trimex.py
@@ -120,8 +120,7 @@ class Trimex(gui_base_original.Modifier):
             self.extrudeMode = True
             self.ghost = [trackers.ghostTracker([self.obj])]
             self.normal = self.obj.Shape.Faces[0].normalAt(0.5, 0.5)
-            for v in self.obj.Shape.Vertexes:
-                self.ghost.append(trackers.lineTracker())
+            self.ghost += [trackers.lineTracker()] * len(self.obj.Shape.Vertexes)
         elif len(self.obj.Shape.Faces) > 1:
             # face extrude mode, a new object is created
             ss = Gui.Selection.getSelectionEx()[0]
@@ -132,8 +131,7 @@ class Trimex(gui_base_original.Modifier):
                     self.extrudeMode = True
                     self.ghost = [trackers.ghostTracker([self.obj])]
                     self.normal = self.obj.Shape.Faces[0].normalAt(0.5, 0.5)
-                    for v in self.obj.Shape.Vertexes:
-                        self.ghost.append(trackers.lineTracker())
+                    self.ghost += [trackers.lineTracker()] * len(self.obj.Shape.Vertexes)
         else:
             # normal wire trimex mode
             self.color = self.obj.ViewObject.LineColor