diff --git a/src/cardset/infrastructure/grpc/cardset.grpc-controller.ts b/src/cardset/infrastructure/grpc/cardset.grpc-controller.ts
index 039825a..3fa39dd 100644
--- a/src/cardset/infrastructure/grpc/cardset.grpc-controller.ts
+++ b/src/cardset/infrastructure/grpc/cardset.grpc-controller.ts
@@ -17,8 +17,8 @@ export class CardsetGrpcController {
     data: IsCardSetViewableRequest,
   ): Promise<IsCardSetViewableResponse> {
     const viewable = await this.cardsetUseCase.isCardSetViewable(
-      data.cardSetId,
-      data.userId,
+      Number(data.cardSetId),
+      Number(data.userId),
     );
     return { viewable };
   }
@@ -28,8 +28,8 @@ export class CardsetGrpcController {
     data: GetCardSetsByIdsRequest,
   ): Promise<GetCardSetsByIdsResponse> {
     const cardsets = await this.cardsetUseCase.getCardSetsByIds(
-      data.cardSetIds,
-      data.userId,
+      data.cardSetIds.map(Number),
+      Number(data.userId),
     );
     return {
       cardSets: cardsets.map((c) => ({
diff --git a/src/collaboration/infrastructure/gateway/collaboration.gateway.ts b/src/collaboration/infrastructure/gateway/collaboration.gateway.ts
index 7668613..eb33d1e 100644
--- a/src/collaboration/infrastructure/gateway/collaboration.gateway.ts
+++ b/src/collaboration/infrastructure/gateway/collaboration.gateway.ts
@@ -19,7 +19,7 @@ import { CollaborationUseCase } from '../../application/collaboration.use-case';
 @UseGuards(WsAuthGuard)
 @WebSocketGateway({
   cors: { origin: '*' },
-  namespace: '/v1/card-sets/ws',
+  path: '/v1/card-sets/ws',
   pingTimeout: 60000,
   pingInterval: 25000,
 })