diff --git a/server-rs/crates/api-server/src/llm/mod.rs b/server-rs/crates/api-server/src/llm/mod.rs
index 94f3be0bd..351ffbb52 100644
--- a/server-rs/crates/api-server/src/llm/mod.rs
+++ b/server-rs/crates/api-server/src/llm/mod.rs
@@ -606,7 +606,6 @@ pub async fn proxy_llm_messages(
     let mut native_request = client
         .post(router_protocol_url(&base_url, "messages"))
         .header("x-api-key", api_key.clone())
-        .bearer_auth(api_key.clone())
         .header("content-type", "application/json");
     for name in ["anthropic-version", "anthropic-beta", "accept"] {
         if let Some(value) = headers.get(name) {