diff --git a/hpb_generator/gen_extensions.cc b/hpb_generator/gen_extensions.cc
index 00a8dcd496..de241c95ac 100644
--- a/hpb_generator/gen_extensions.cc
+++ b/hpb_generator/gen_extensions.cc
@@ -67,14 +67,14 @@ void WriteExtensionIdentifier(const protobuf::FieldDescriptor* ext,
   if (ext->extension_scope()) {
     output(
         R"cc(
-          const ::protos::internal::ExtensionIdentifier<$0, $3> $4::$2(&$1);
+          const hpb::internal::ExtensionIdentifier<$0, $3> $4::$2(&$1);
         )cc",
         ContainingTypeName(ext), mini_table_name, ext->name(),
         CppTypeParameterName(ext), ClassName(ext->extension_scope()));
   } else {
     output(
         R"cc(
-          const ::protos::internal::ExtensionIdentifier<$0, $3> $2(&$1);
+          const hpb::internal::ExtensionIdentifier<$0, $3> $2(&$1);
         )cc",
         ContainingTypeName(ext), mini_table_name, ext->name(),
         CppTypeParameterName(ext));
diff --git a/protos/protos.h b/protos/protos.h
index 0d35d05770..2879ae7e99 100644
--- a/protos/protos.h
+++ b/protos/protos.h
@@ -9,7 +9,6 @@
 #include "google/protobuf/hpb/hpb.h"
 namespace protos {
 namespace internal {
-using hpb::internal::ExtensionIdentifier;
 using hpb::internal::GetInternalMsg;
 using hpb::internal::PrivateAccess;
 using hpb::internal::Serialize;