diff --git a/YACOSCore/ejbModule/org/yacos/core/evaluation/EvaluationManagerBean.java b/YACOSCore/ejbModule/org/yacos/core/evaluation/EvaluationManagerBean.java
index 6747a17..a0969bf 100644
--- a/YACOSCore/ejbModule/org/yacos/core/evaluation/EvaluationManagerBean.java
+++ b/YACOSCore/ejbModule/org/yacos/core/evaluation/EvaluationManagerBean.java
@@ -195,7 +195,13 @@ public class EvaluationManagerBean implements IEvaluationManager {
 		Query q = em.createQuery("from Report r where article_id= ? and referee_id= ?");
 		q.setParameter(1, articleId);
 		q.setParameter(2, refereeLogin);
-		return (Report) q.getSingleResult();
+		
+		try {
+			return (Report) q.getSingleResult();
+		}
+		catch (javax.persistence.NoResultException e) {
+			return null;
+		}
 	}
 
 	@SuppressWarnings("unchecked")