diff --git a/buisnesslogic/src/main/java/com/plannaplan/services/AssignmentService.java b/buisnesslogic/src/main/java/com/plannaplan/services/AssignmentService.java
index e5a8ccf..a99d0ea 100755
--- a/buisnesslogic/src/main/java/com/plannaplan/services/AssignmentService.java
+++ b/buisnesslogic/src/main/java/com/plannaplan/services/AssignmentService.java
@@ -91,12 +91,14 @@ public class AssignmentService {
             if (com.isPresent()) {
                 final List<Assignment> assignments = this.getCommisionAssignments(com.get());
                 assignments.forEach(a -> {
-                    final Groups group = a.getGroup();
-                    if (group.getCapacity() > group.getRegisteredStudents().size()) {
-                        e.claimGroup(group);
-                        accepted.add(group);
-                    } else {
-                        removed.add(group);
+                    if (a.isAccepted() == false) {
+                        final Groups group = a.getGroup();
+                        if (group.getCapacity() > group.getRegisteredStudents().size()) {
+                            e.claimGroup(group);
+                            accepted.add(group);
+                        } else {
+                            removed.add(group);
+                        }
                     }
                 });
             }