diff --git a/src/Mod/Fem/femobjects/_FemResultMechanical.py b/src/Mod/Fem/femobjects/_FemResultMechanical.py
index 192a39dad6d9..ddfbc3b36d7e 100644
--- a/src/Mod/Fem/femobjects/_FemResultMechanical.py
+++ b/src/Mod/Fem/femobjects/_FemResultMechanical.py
@@ -320,7 +320,7 @@ def onDocumentRestored(self, obj):
         if len(obj.Stats) == 39:
             temp = obj.Stats
             for i in range(12, -1, -1):
-                del temp [3 * i + 1]
+                del temp[3 * i + 1]
             obj.Stats = temp
 
     def __getstate__(self):