diff --git a/src/config.ts b/src/config.ts
index 0762931fd..17f645361 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -18,18 +18,16 @@ export namespace Config {
   export type BaseRequestConfig = RequestConfig;
   export type Error = AxiosError;
 
-  export type Authentication = UtilityTypes.XOR<
+  export type Authentication = UtilityTypes.XOR3<
   {
     personalAccessToken: Authentication.PersonalAccessToken;
   },
-  UtilityTypes.XOR<
   {
     basic: Authentication.Basic;
   },
   {
     oauth2: Authentication.OAuth2;
   }
-  >
   >;
 
   export interface Middlewares {
diff --git a/src/utilityTypes.ts b/src/utilityTypes.ts
index 413c0a564..08972b557 100644
--- a/src/utilityTypes.ts
+++ b/src/utilityTypes.ts
@@ -4,4 +4,13 @@ export namespace UtilityTypes {
 
   /** Get the XOR type which could make 2 types exclude each other */
   export type XOR<T, U> = T | U extends object ? (Without<T, U> & U) | (Without<U, T> & T) : T | U;
+
+  export type XOR3<T, U, V> =
+    (T | U | V) extends (infer R)
+      ? (R extends T ? (U | V) : R) extends R
+        ? (R extends U ? (T | V) : R) extends R
+          ? (R extends V ? (T | U) : never)
+          : never
+        : never
+      : never;
 }