diff --git a/paddle/api/Trainer.cpp b/paddle/api/Trainer.cpp
index 8a4b79a511dbeae33ad9cae38eee8dee2e9abc2e..84e4ca054abb0100a02c8a40e31c49c17684ef40 100644
--- a/paddle/api/Trainer.cpp
+++ b/paddle/api/Trainer.cpp
@@ -73,6 +73,7 @@ Trainer* Trainer::create(TrainerConfig* config,
   if (retv->m->getConfig().IsInitialized()) {
     return retv;
   } else {
+    retv->m->getConfig().CheckInitialized();
     throw IOError();
   }
 }
diff --git a/python/paddle/trainer_config_helpers/tests/ProtobufEqualMain.cpp b/python/paddle/trainer_config_helpers/tests/ProtobufEqualMain.cpp
index ec19e74cf95b213c0d8774cc37f44bedbfffdb7a..fc53422afd44a6cb1d81a8ec9d27d83523f30e6c 100644
--- a/python/paddle/trainer_config_helpers/tests/ProtobufEqualMain.cpp
+++ b/python/paddle/trainer_config_helpers/tests/ProtobufEqualMain.cpp
@@ -12,21 +12,19 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License. */
 
+#include <google/protobuf/text_format.h>
 #include <google/protobuf/util/message_differencer.h>
 #include <fstream>
 #include <iostream>
 #include "TrainerConfig.pb.h"
 
-using google::protobuf::MessageLite;
-using google::protobuf::Message;
-
-bool loadPb(MessageLite* conf, const std::string& filename) {
+bool loadPb(google::protobuf::Message* conf, const std::string& filename) {
   std::ifstream fin;
   fin.open(filename.c_str());
   if (fin.is_open()) {
     std::string str((std::istreambuf_iterator<char>(fin)),
                     std::istreambuf_iterator<char>());
-    bool ok = conf->ParseFromString(str);
+    bool ok = google::protobuf::TextFormat::ParseFromString(str, conf);
     fin.close();
     return ok;
   } else {
@@ -35,8 +33,8 @@ bool loadPb(MessageLite* conf, const std::string& filename) {
 }
 
 int main(int argc, char** argv) {
-  std::unique_ptr<MessageLite> config1;
-  std::unique_ptr<MessageLite> config2;
+  std::unique_ptr<google::protobuf::Message> config1;
+  std::unique_ptr<google::protobuf::Message> config2;
   if (argc == 3) {
     config1.reset(new paddle::ModelConfig());
     config2.reset(new paddle::ModelConfig());
@@ -52,8 +50,7 @@ int main(int argc, char** argv) {
     return 3;
   } else {
     if (google::protobuf::util::MessageDifferencer::ApproximatelyEquals(
-            *reinterpret_cast<Message*>(config1.get()),
-            *reinterpret_cast<Message*>(config2.get()))) {
+            *config1, *config2)) {
       return 0;
     } else {
       return 4;