diff --git a/server-rs/crates/api-server/src/llm/mod.rs b/server-rs/crates/api-server/src/llm/mod.rs
index 28c275fb8..b12bbb318 100644
--- a/server-rs/crates/api-server/src/llm/mod.rs
+++ b/server-rs/crates/api-server/src/llm/mod.rs
@@ -281,7 +281,7 @@ fn public_model_catalog(
         .default_model_id_for(access)
         .ok_or_else(|| {
             AppError::from_status(StatusCode::SERVICE_UNAVAILABLE)
-                .with_code("MODEL_UNAVAILABLE")
+                .with_code(AgcModelResolveError::Unavailable.code())
                 .with_message("当前会员档位没有可用模型")
         })?
         .to_string();