diff --git a/src/framework/scope.cpp b/src/framework/scope.cpp
index 664499d7e635c75ecc277bfc708dda908a25b170..2f7ff247b846f0a5f3e59c5c2f317a59598fc643 100644
--- a/src/framework/scope.cpp
+++ b/src/framework/scope.cpp
@@ -22,7 +22,6 @@ namespace paddle_mobile {
 namespace framework {
 
 Scope &Scope::NewScope() const {
-  std::unique_lock<std::mutex> lock(mutex_);
   kids_.push_back(new Scope(this));
   return *kids_.back();
 }
@@ -72,7 +71,6 @@ std::vector<std::string> Scope::LocalVarNames() const {
 }
 
 void Scope::DeleteScope(Scope *scope) const {
-  std::unique_lock<std::mutex> lock(mutex_);
   auto it = std::find(kids_.begin(), kids_.end(), scope);
   kids_.erase(it);
   delete scope;
diff --git a/src/framework/scope.h b/src/framework/scope.h
index 27702b88c0c188957b46496dcc4a548a54355c14..b1f0f67b713d699fa68054c6820438843b622142 100644
--- a/src/framework/scope.h
+++ b/src/framework/scope.h
@@ -15,7 +15,6 @@ limitations under the License. */
 #pragma once
 
 #include <list>
-#include <mutex>
 #include <unordered_map>
 #include "variable.h"
 
@@ -71,7 +70,6 @@ class Scope {
   mutable std::list<Scope *> kids_;
   Scope const *parent_{nullptr};
 
-  mutable std::mutex mutex_;
 };
 }  // namespace framework
 }  // namespace paddle_mobile
diff --git a/src/framework/tensor.h b/src/framework/tensor.h
index 674edd67733ef8d0520d28f5c131e9da6746ad17..15332cf31c88415d7df46b9ab46f54ad98044927 100644
--- a/src/framework/tensor.h
+++ b/src/framework/tensor.h
@@ -14,7 +14,7 @@ limitations under the License. */
 
 #pragma once
 
-#include <common/enforce.h>
+#include "common/enforce.h"
 #include <cstdint>
 #include <cstring>
 #include <memory>