diff --git a/ropetest/refactor/patchedasttest.py b/ropetest/refactor/patchedasttest.py
index 296fb65bb..7a2bc8fc2 100644
--- a/ropetest/refactor/patchedasttest.py
+++ b/ropetest/refactor/patchedasttest.py
@@ -366,10 +366,8 @@ def test_aug_assign_node(self):
         source = "a += 1\n"
         ast_frag = patchedast.get_patched_ast(source, True)
         checker = _ResultChecker(self, ast_frag)
-        start = source.index("a")
         checker.check_region("AugAssign", 0, len(source) - 1)
         checker.check_children("AugAssign", ["Name", " ", "+", "", "=", " ", "Num"])
-        self.assertTrue(start is not None)
 
     @testutils.only_for_versions_lower("3")
     def test_back_quotenode(self):