diff --git a/src/main/java/de/szut/lf8_starter/welcome/WelcomeController.java b/src/main/java/de/szut/lf8_starter/welcome/WelcomeController.java
index 0cfb9e5..4effa6b 100644
--- a/src/main/java/de/szut/lf8_starter/welcome/WelcomeController.java
+++ b/src/main/java/de/szut/lf8_starter/welcome/WelcomeController.java
@@ -1,7 +1,5 @@
 package de.szut.lf8_starter.welcome;
 
-
-
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.core.Authentication;
 import org.springframework.security.core.GrantedAuthority;
@@ -19,8 +17,8 @@ public class WelcomeController {
     }
 
     @GetMapping("/roles")
-    public ResponseEntity getRoles(Authentication authentication) {
-        return ResponseEntity.ok(authentication.getAuthorities());
+    public ResponseEntity<Collection<GrantedAuthority>> getRoles(Authentication authentication) {
+        return ResponseEntity.ok((Collection<GrantedAuthority>) authentication.getAuthorities());
     }