diff --git a/nummi/main/migrations/0022_alter_account_icon_alter_category_icon.py b/nummi/main/migrations/0022_alter_account_icon_alter_category_icon.py
new file mode 100644
index 0000000..e81300f
--- /dev/null
+++ b/nummi/main/migrations/0022_alter_account_icon_alter_category_icon.py
@@ -0,0 +1,27 @@
+# Generated by Django 4.1.4 on 2022-12-31 08:53
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("main", "0021_alter_account_options_alter_category_options_and_more"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="account",
+            name="icon",
+            field=models.SlugField(
+                default="building-columns", max_length=64, verbose_name="Icon"
+            ),
+        ),
+        migrations.AlterField(
+            model_name="category",
+            name="icon",
+            field=models.SlugField(
+                default="folder", max_length=64, verbose_name="Icon"
+            ),
+        ),
+    ]
diff --git a/nummi/main/models.py b/nummi/main/models.py
index ad1021d..e17dfe5 100644
--- a/nummi/main/models.py
+++ b/nummi/main/models.py
@@ -33,11 +33,10 @@ class CustomModel(UserModel):
 class Account(CustomModel):
     id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
     name = models.CharField(max_length=64, default=_("Account"), verbose_name=_("Name"))
-    icon = models.CharField(
+    icon = models.SlugField(
         max_length=64,
         default="building-columns",
         verbose_name=_("Icon"),
-        validators=[validate_slug],
     )
 
     def __str__(self):
@@ -79,11 +78,10 @@ class Category(CustomModel):
     name = models.CharField(
         max_length=64, default=_("Category"), verbose_name=_("Name")
     )
-    icon = models.CharField(
+    icon = models.SlugField(
         max_length=64,
         default="folder",
         verbose_name=_("Icon"),
-        validators=[validate_slug],
     )
     budget = models.BooleanField(default=True, verbose_name=_("Budget"))