diff --git a/docs/introduction/roadmap.md b/docs/introduction/roadmap.md
index 0272d713d7e1aa17d691d1ae11cfd100007d02e2..0c5b5366041ff4cf406fe5d9d67833925c7795f8 100644
--- a/docs/introduction/roadmap.md
+++ b/docs/introduction/roadmap.md
@@ -30,4 +30,3 @@
 ## 2.6
 
 [v2.6 project](https://github.com/PaddlePaddle/Paddle-Lite/milestones/v2.6)
-
diff --git a/lite/model_parser/model_parser.cc b/lite/model_parser/model_parser.cc
index 17fad6732bc88bd7d78090be8a2b4a69d04b99c1..6eaf030928bd9edccf73626e4d085bd24e396081 100644
--- a/lite/model_parser/model_parser.cc
+++ b/lite/model_parser/model_parser.cc
@@ -796,7 +796,7 @@ void LoadModelNaiveFromFile(const std::string &filename,
   const uint64_t opt_version_length = 16 * sizeof(char);
   ReadModelDataFromFile<char>(
       opt_version, prog_path, &offset, opt_version_length);
-  VLOG(4) << "Opt_version:" << opt_version;
+  VLOG(4) << "Opt_version:" << static_cast<const char *>(opt_version);
 
   // check version, opt's version should be consistent with current Paddle-Lite
   // version.
@@ -806,7 +806,7 @@ void LoadModelNaiveFromFile(const std::string &filename,
     LOG(WARNING) << "warning: the version of opt that transformed this model "
                     "is not consistent with current Paddle-Lite version."
                     "\n      version of opt:"
-                 << opt_version
+                 << static_cast<const char *>(opt_version)
                  << "\n      version of current Paddle-Lite:" << paddle_version;
   }
 
@@ -893,7 +893,7 @@ void LoadModelNaiveFromMemory(const std::string &model_buffer,
   const uint64_t paddle_version_length = 16 * sizeof(char);
   ReadModelDataFromBuffer<char>(
       opt_version, model_buffer, &offset, paddle_version_length);
-  VLOG(4) << "Opt_version:" << opt_version;
+  VLOG(4) << "Opt_version:" << static_cast<const char *>(opt_version);
 
   // (3)get topo_size and topo_data
   uint64_t topo_size;
diff --git a/lite/utils/replace_stl/stream.cc b/lite/utils/replace_stl/stream.cc
index d821078e366b1ade8b093e08a63829bcf35c1376..e72f2717293d0cc07ac28c6d51dd4d2bb5ae7874 100644
--- a/lite/utils/replace_stl/stream.cc
+++ b/lite/utils/replace_stl/stream.cc
@@ -100,6 +100,12 @@ ostream& ostream::operator<<(const unsigned& obj) {
   return *this;
 }
 
+template <>
+ostream& ostream::operator<<(const uint16_t& obj) {
+  ADD_DATA_AS_STRING(data_, obj);
+  return *this;
+}
+
 template <>
 ostream& ostream::operator<<(const unsigned long& obj) {  // NOLINT
   ADD_DATA_AS_STRING(data_, obj);