diff --git a/recruitment/forms.py b/recruitment/forms.py
index 405e92555..186e9c799 100644
--- a/recruitment/forms.py
+++ b/recruitment/forms.py
@@ -1054,8 +1054,8 @@ class SkillZoneCandidateForm(ModelForm):
         if commit:
             cand = self.instance
             for id in other_candidates:
-                cand.pk = None
-                cand.id = None
+                cand.pk = cand.pk + 1
+                cand.id = cand.pk
                 cand.candidate_id = Candidate.objects.get(id=id)
                 try:
                     super(SkillZoneCandidate, cand).save()