diff --git a/src/cpp/ext/proto_server_reflection.cc b/src/cpp/ext/proto_server_reflection.cc
index 348a035f0f3..3973bfb58ea 100644
--- a/src/cpp/ext/proto_server_reflection.cc
+++ b/src/cpp/ext/proto_server_reflection.cc
@@ -197,8 +197,8 @@ Status ProtoServerReflection::GetAllExtensionNumbers(
 
   std::vector<const protobuf::FieldDescriptor*> extensions;
   descriptor_pool_->FindAllExtensions(desc, &extensions);
-  for (auto extension : extensions) {
-    response->add_extension_number(extension->number());
+  for (auto it = extensions.begin(); it != extensions.end(); it++) {
+    response->add_extension_number((*it)->number());
   }
   response->set_base_type_name(type);
   return Status::OK;
diff --git a/src/cpp/ext/proto_server_reflection_plugin.cc b/src/cpp/ext/proto_server_reflection_plugin.cc
index 7f9b6673561..5b806ce1ae1 100644
--- a/src/cpp/ext/proto_server_reflection_plugin.cc
+++ b/src/cpp/ext/proto_server_reflection_plugin.cc
@@ -60,14 +60,14 @@ void ProtoServerReflectionPlugin::ChangeArguments(const grpc::string& name,
                                                   void* value) {}
 
 bool ProtoServerReflectionPlugin::has_sync_methods() const {
-  if (reflection_service_ != nullptr) {
+  if (reflection_service_) {
     return reflection_service_->has_synchronous_methods();
   }
   return false;
 }
 
 bool ProtoServerReflectionPlugin::has_async_methods() const {
-  if (reflection_service_ != nullptr) {
+  if (reflection_service_) {
     return reflection_service_->has_async_methods();
   }
   return false;
diff --git a/test/cpp/util/proto_reflection_descriptor_database.cc b/test/cpp/util/proto_reflection_descriptor_database.cc
index 6907d97bd5e..25b720aee0a 100644
--- a/test/cpp/util/proto_reflection_descriptor_database.cc
+++ b/test/cpp/util/proto_reflection_descriptor_database.cc
@@ -298,7 +298,7 @@ void ProtoReflectionDescriptorDatabase::AddFileFromResponse(
 
 const std::shared_ptr<ProtoReflectionDescriptorDatabase::ClientStream>
 ProtoReflectionDescriptorDatabase::GetStream() {
-  if (stream_ == nullptr) {
+  if (!stream_) {
     stream_ = stub_->ServerReflectionInfo(&ctx_);
   }
   return stream_;