diff --git a/jobposting/models.py b/jobposting/models.py
index 2ade887..bddf094 100644
--- a/jobposting/models.py
+++ b/jobposting/models.py
@@ -78,7 +78,7 @@ class SkillLevels(models.Model):
         ('E', 'Ekspert'),
     ]
 
-    skill_id = models.ForeignKey(Skill)
+    skill_id = models.ForeignKey(Skill, on_delete=models.CASCADE)
     skill_level = models.CharField(max_length=1, choices=proficiency_choices,)
 
 class CompanyLogo(models.Model):