diff --git a/src/lib/auth/base-user.service.ts b/src/lib/auth/base-user.service.ts
index ad33162..bff668a 100644
--- a/src/lib/auth/base-user.service.ts
+++ b/src/lib/auth/base-user.service.ts
@@ -84,6 +84,10 @@ export abstract class BaseUserService<
     }
 
     getName(user: string | Interface | Class): string | undefined {
+        if (!user) {
+            return;
+        }
+
         const userId = typeof user === 'string' ? user : user.userId;
         return this.find(userId)?.name;
     }