diff --git a/src/Mod/Fem/FemResultVTK.py b/src/Mod/Fem/FemResultVTK.py
index ffbf6d61b..4d2c4d8bc 100644
--- a/src/Mod/Fem/FemResultVTK.py
+++ b/src/Mod/Fem/FemResultVTK.py
@@ -26,16 +26,17 @@ __title__ = "FreeCAD Result import and export VTK file library"
 __author__ = "Qingfeng Xia"
 __url__ = "http://www.freecadweb.org"
 
+## @package FemResultVTK
+#  \ingroup FEM
 
 import os
-from math import pow, sqrt
-import numpy as np
-
 import FreeCAD
 
+
 if open.__module__ == '__builtin__':
     pyopen = open  # because we'll redefine open below
 
+
 def insert(filename, docname):
     "called when freecad wants to import a file"
     try:
@@ -51,9 +52,11 @@ def open(filename):
     docname = os.path.splitext(os.path.basename(filename))[0]
     insert(filename, docname)
 
+
 def importFemResult(filename):
     FreeCAD.Console.PrintError("FemResult import is not implemented, actually not necessary\n")
 
+
 def export(objectslist, filename):
     "called when freecad exports a fem result object"
     if len(objectslist) != 1:
@@ -64,4 +67,4 @@ def export(objectslist, filename):
         FreeCAD.Console.PrintError("object selcted is not FemResultObject.\n")
         return
     import Fem
-    Fem.writeResult(filename, obj)
\ No newline at end of file
+    Fem.writeResult(filename, obj)