diff --git a/proto/c2se/backend/member_class.proto b/proto/c2se/backend/member_class.proto
index 3e02466..9e54c8e 100644
--- a/proto/c2se/backend/member_class.proto
+++ b/proto/c2se/backend/member_class.proto
@@ -32,7 +32,7 @@ message ListMemberClassesRequest {
   optional string name_like = 4;
 }
 
-message ListMemberClasssResponse {
+message ListMemberClassesResponse {
   message Result {
     repeated bet.beteran.member.MemberClass member_classes = 1;
   }
diff --git a/proto/ss/member/member_class.proto b/proto/ss/member/member_class.proto
index 80e11a9..9f350b2 100644
--- a/proto/ss/member/member_class.proto
+++ b/proto/ss/member/member_class.proto
@@ -34,7 +34,7 @@ message ListMemberClassesRequest {
   optional string name_like = 5;
 }
 
-message ListMemberClasssResponse {
+message ListMemberClassesResponse {
   message Result {
     repeated bet.beteran.member.MemberClass member_classes = 1;
   }