diff --git a/src/Mod/Test/Document.py b/src/Mod/Test/Document.py
index 66c6e6d907..afbfb663b4 100644
--- a/src/Mod/Test/Document.py
+++ b/src/Mod/Test/Document.py
@@ -1512,6 +1512,7 @@ class DocumentObserverCases(unittest.TestCase):
     self.assertEqual(self.Obs.parameter2.pop(), self.Doc1.FileName)
     self.assertEqual(self.Obs.signal.pop(), 'DocStartSave')
     self.assertEqual(self.Obs.parameter2.pop(), self.Doc1.FileName)
+    FreeCAD.closeDocument(self.Doc1.Name)
 
   def testDocument(self):