diff --git a/src/ast_path.cpp b/src/ast_path.cpp
index 2d2c600..2734377 100644
--- a/src/ast_path.cpp
+++ b/src/ast_path.cpp
@@ -69,7 +69,7 @@
                 std::experimental::make_ostream_joiner(res, ' '),
                 [] (const auto& it) { return it.first + "=" + it.second; });
         res << "]";
-    return res.str();
+        return res.str();
     }
     std::string operator()(const nodeup_&) const
     {