diff --git a/crates/paws_infra/src/auth/http/qwen.rs b/crates/paws_infra/src/auth/http/qwen.rs
index bb61a02b..26b25cf1 100644
--- a/crates/paws_infra/src/auth/http/qwen.rs
+++ b/crates/paws_infra/src/auth/http/qwen.rs
@@ -79,7 +79,7 @@ impl QwenHttpProvider {
             code_challenge_method: "S256".to_string(),
         };
 
-        let client = Self::build_http_client_internal(config)?;
+        let client = build_http_client(config.custom_headers.as_ref())?;
         let response = client
             .post(config.auth_url.as_str())
             .header("Content-Type", "application/x-www-form-urlencoded")
@@ -109,7 +109,7 @@ impl QwenHttpProvider {
             code_verifier: code_verifier.to_string(),
         };
 
-        let client = Self::build_http_client_internal(config)?;
+        let client = build_http_client(config.custom_headers.as_ref())?;
         let response = client
             .post(config.token_url.as_str())
             .header("Content-Type", "application/x-www-form-urlencoded")
@@ -139,10 +139,6 @@ impl QwenHttpProvider {
             expires_in,
         ))
     }
-
-    fn build_http_client_internal(config: &OAuthConfig) -> anyhow::Result<reqwest::Client> {
-        build_http_client(config.custom_headers.as_ref())
-    }
 }
 
 #[cfg(test)]