diff --git a/assets/migrations/0011_asset_nickname.py b/assets/migrations/0011_asset_nickname.py
index 9d7bdb45..c0f78947 100644
--- a/assets/migrations/0011_asset_nickname.py
+++ b/assets/migrations/0011_asset_nickname.py
@@ -1,4 +1,4 @@
-# Generated by Django 2.0.13 on 2020-03-02 17:53
+# Generated by Django 2.0.13 on 2020-03-03 19:40
 
 from django.db import migrations, models
 
@@ -13,6 +13,6 @@ class Migration(migrations.Migration):
         migrations.AddField(
             model_name='asset',
             name='nickname',
-            field=models.CharField(blank=True, max_length=20, unique=True),
+            field=models.CharField(blank=True, max_length=20, null=True, unique=True),
         ),
     ]
diff --git a/assets/models.py b/assets/models.py
index 51a7c6ed..91fc9455 100644
--- a/assets/models.py
+++ b/assets/models.py
@@ -82,7 +82,7 @@ class Asset(models.Model, RevisionMixin):
     category = models.ForeignKey(to=AssetCategory, on_delete=models.CASCADE)
     status = models.ForeignKey(to=AssetStatus, on_delete=models.CASCADE)
     serial_number = models.CharField(max_length=150, blank=True)
-    nickname = models.CharField(max_length=20, blank=True, unique=True)
+    nickname = models.CharField(max_length=20, blank=True, null=True, unique=True)  # Null = true required because of the unique constraint
     purchased_from = models.ForeignKey(to=Supplier, on_delete=models.CASCADE, blank=True, null=True, related_name="assets")
     date_acquired = models.DateField()
     date_sold = models.DateField(blank=True, null=True)