diff --git a/src/Mod/Test/Document.py b/src/Mod/Test/Document.py
index 742fb19fd0..db30a5c4ea 100644
--- a/src/Mod/Test/Document.py
+++ b/src/Mod/Test/Document.py
@@ -2245,7 +2245,7 @@ class FeatureTestColumn(unittest.TestCase):
         self.assertEqual(self.obj.Value, 702)
 
     def testAAZ(self):
-        self.obj.Column = "AAA"
+        self.obj.Column = "AAZ"
         self.obj.recompute()
         self.assertEqual(self.obj.Value, 727)