diff --git a/FOSSDB/apps/fossdb/operating_system/models.py b/FOSSDB/apps/fossdb/operating_system/models.py
index d638ec8..92c2516 100644
--- a/FOSSDB/apps/fossdb/operating_system/models.py
+++ b/FOSSDB/apps/fossdb/operating_system/models.py
@@ -2,6 +2,6 @@ from django.db import models
 
 
 class OperatingSystem(models.Model):
-    name = models.CharField(max_length=100)
+    name = models.CharField(max_length=100, unique=True)
     description = models.TextField(blank=True, default="")
     version = models.CharField(max_length=50, blank=True)