diff --git a/common/js/types.d.ts b/common/js/types.d.ts
index 7af049b00..61504e9c0 100644
--- a/common/js/types.d.ts
+++ b/common/js/types.d.ts
@@ -1120,7 +1120,7 @@ export declare type APIPermissions = "create:goal" | "manage:goal";
 export interface TachiAPIAuthData {
     userID: integer | null;
     token: string | null;
-    identifier: string | null;
+    identifier: string;
     permissions: Partial<Record<APIPermissions, boolean>>;
 }
 export {};
diff --git a/common/src/types.ts b/common/src/types.ts
index 59677dcfe..edf3c62e5 100644
--- a/common/src/types.ts
+++ b/common/src/types.ts
@@ -1373,6 +1373,6 @@ export type APIPermissions = "create:goal" | "manage:goal";
 export interface TachiAPIAuthData {
     userID: integer | null;
     token: string | null;
-    identifier: string | null;
+    identifier: string;
     permissions: Partial<Record<APIPermissions, boolean>>;
 }