diff --git a/app/api/anthropic/[...path]/route.ts b/app/api/anthropic/[...path]/route.ts
index 495002b8f..78106efa7 100644
--- a/app/api/anthropic/[...path]/route.ts
+++ b/app/api/anthropic/[...path]/route.ts
@@ -146,8 +146,8 @@ async function request(req: NextRequest) {
       if (
         isModelAvailableInServer(
           serverConfig.customModels,
-          jsonBody?.model,
-          ServiceProvider.Anthropic,
+          jsonBody?.model as string,
+          ServiceProvider.Anthropic as string,
         )
       ) {
         return NextResponse.json(
diff --git a/app/api/common.ts b/app/api/common.ts
index c2dfed4ab..1454fde2e 100644
--- a/app/api/common.ts
+++ b/app/api/common.ts
@@ -97,13 +97,13 @@ export async function requestOpenai(req: NextRequest) {
       if (
         isModelAvailableInServer(
           serverConfig.customModels,
-          jsonBody?.model,
-          ServiceProvider.OpenAI,
+          jsonBody?.model as string,
+          ServiceProvider.OpenAI as string,
         ) ||
         isModelAvailableInServer(
           serverConfig.customModels,
-          jsonBody?.model,
-          ServiceProvider.Azure,
+          jsonBody?.model as string,
+          ServiceProvider.Azure as string,
         )
       ) {
         return NextResponse.json(
diff --git a/app/utils/model.ts b/app/utils/model.ts
index 741971b00..6b5173a59 100644
--- a/app/utils/model.ts
+++ b/app/utils/model.ts
@@ -119,9 +119,9 @@ export function collectModelsWithDefaultModel(
 }
 
 export function isModelAvailableInServer(
-  customModels,
-  modelName,
-  providerName,
+  customModels: string,
+  modelName: string,
+  providerName: string,
 ) {
   const fullName = `${modelName}@${providerName}`;
   const modelTable = collectModelTable(DEFAULT_MODELS, customModels);