1 files changed, 2 insertions, 2 deletions
diff --git a/src/google/protobuf/compiler/cpp/cpp_extension.h b/src/google/protobuf/compiler/cpp/cpp_extension.h
index c316f5da..72413f6b 100644
--- a/src/google/protobuf/compiler/cpp/cpp_extension.h
+++ b/src/google/protobuf/compiler/cpp/cpp_extension.h
@@ -75,10 +75,10 @@ class ExtensionGenerator {
 
  private:
   const FieldDescriptor* descriptor_;
-  string type_traits_;
+  std::string type_traits_;
   Options options_;
 
-  std::map<string, string> variables_;
+  std::map<std::string, std::string> variables_;
 
   GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ExtensionGenerator);
 };