diff --git a/YACOSCore/ejbModule/org/yacos/core/users/UserManagerBean.java b/YACOSCore/ejbModule/org/yacos/core/users/UserManagerBean.java
index d18b527..b4f05f7 100644
--- a/YACOSCore/ejbModule/org/yacos/core/users/UserManagerBean.java
+++ b/YACOSCore/ejbModule/org/yacos/core/users/UserManagerBean.java
@@ -161,11 +161,11 @@ public class UserManagerBean implements IUserManager{
 		this.UpdateUser(user);
 	}
 
-	public void removeSpecialityToUser(int specialityId, String login){
-		Query query = em.createQuery("delete from User u, u.specialities s WHERE s = ? and u = ?");
-		query.setParameter(1, this.getSpeciality(specialityId));
-		query.setParameter(2, this.getUser(login));
-		query.executeUpdate();
+	public void removeSpecialityFromUser(int specialityId, String login){
+		User user = this.getUser(login);
+		Speciality spe = this.getSpeciality(specialityId);
+		user.getSpecialities().remove(spe);
+		this.UpdateUser(user);
 	}
 	
 	@SuppressWarnings("unchecked")