diff --git a/lite/api/paddle_place.cc b/lite/api/paddle_place.cc
index 3cef9563d89cd5b21dbdcb0c4ccf1504e7d311b3..cb70fd43cdd80713a6a47afb61bbde24e131a5fa 100644
--- a/lite/api/paddle_place.cc
+++ b/lite/api/paddle_place.cc
@@ -161,6 +161,7 @@ std::set<TargetType> ExpandValidTargets(TargetType target) {
                                                TARGET(kBM),
                                                TARGET(kMLU),
                                                TARGET(kAPU),
+                                               TARGET(kRKNPU),
                                                TARGET(kFPGA)});
   if (target == TARGET(kAny)) {
     return valid_set;
diff --git a/lite/core/op_registry.h b/lite/core/op_registry.h
index 7c2df12b17bdae80586a94caa8681271cfb7d409..5b58fd2bb9ee88fcdd4eba7289870b839aa88552 100644
--- a/lite/core/op_registry.h
+++ b/lite/core/op_registry.h
@@ -260,6 +260,9 @@ class KernelRegistry final {
               KernelRegistryForTarget<TARGET(kRKNPU),
                                       PRECISION(kAny),
                                       DATALAYOUT(kAny)> *,  //
+              KernelRegistryForTarget<TARGET(kRKNPU),
+                                      PRECISION(kAny),
+                                      DATALAYOUT(kNCHW)> *,  //
               KernelRegistryForTarget<TARGET(kRKNPU),
                                       PRECISION(kFloat),
                                       DATALAYOUT(kNCHW)> *,  //
diff --git a/lite/utils/replace_stl/stream.cc b/lite/utils/replace_stl/stream.cc
index 37b02d3c50b8ed78bb8335a1618f753f645fd00b..3c1cd2573ce47a0e33446a4b54e26e5b61eaca14 100644
--- a/lite/utils/replace_stl/stream.cc
+++ b/lite/utils/replace_stl/stream.cc
@@ -40,9 +40,9 @@ void ostream::pad(const std::string& text) {
 #ifdef LITE_SHUTDOWN_LOG
 #define ADD_DATA_AS_STRING(data_, obj_)
 #else
-#define ADD_DATA_AS_STRING(data_, obj_)             \
-  std::string text = paddle::lite::to_string(obj_); \
-  pad(text);                                        \
+#define ADD_DATA_AS_STRING(data_, obj_)    \
+  std::string text = std::to_string(obj_); \
+  pad(text);                               \
   data_ = data_ + text;
 
 #endif