diff --git a/app/src/main/java/de/sebse/fuplanner/services/kvv/ModulesGradebook.java b/app/src/main/java/de/sebse/fuplanner/services/kvv/ModulesGradebook.java
index b2fd9a3..d28af00 100644
--- a/app/src/main/java/de/sebse/fuplanner/services/kvv/ModulesGradebook.java
+++ b/app/src/main/java/de/sebse/fuplanner/services/kvv/ModulesGradebook.java
@@ -71,7 +71,12 @@ public class ModulesGradebook extends PartModules<ArrayList<Grade>> {
                 }
             }
             callback.onResponse(gradebook);
-        }, error -> errorCallback.onError(new NetworkError(101503, error.networkResponse.statusCode, "Cannot get gradebook!")));
+        }, error -> {
+            if (error.networkResponse.statusCode == 400)
+                callback.onResponse(new ArrayList<>());
+            else
+                errorCallback.onError(new NetworkError(101503, error.networkResponse.statusCode, "Cannot get gradebook!"));
+        });
     }
 
     @Override