diff --git a/paddle/fluid/pybind/eager_functions.cc b/paddle/fluid/pybind/eager_functions.cc
index 3e7e49fcf45d5631ac3550ff5e707c61b00898f4..81ced383eb36a26a4f3061e927ffc9a814a38018 100644
--- a/paddle/fluid/pybind/eager_functions.cc
+++ b/paddle/fluid/pybind/eager_functions.cc
@@ -333,8 +333,7 @@ static std::vector<paddle::any> CastAttrsToTragetType(
                         src.size()));
   for (size_t i = 0; i < src.size(); i++) {
     size_t end = attrs_names[i].find(": ");
-    std::string type_name =
-        attrs_names[i].substr(end + 2, attrs_names.size() - end - 2);
+    std::string type_name = attrs_names[i].substr(end + 2);
     if (type_name == "int") {
       if (src[i].type() == typeid(bool)) {
         res.emplace_back(static_cast<int>(paddle::any_cast<bool>(src[i])));