diff --git a/CHANGES b/CHANGES
index b9f7cec..e5e3180 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,6 @@
+0.3.9 2018-09-20
+- Slugify style slug in StyleMixin
+
 0.3.8 2018-09-14
 - SectionBase: use downgrading slug field
 
diff --git a/content_plugins/plugins/mixins.py b/content_plugins/plugins/mixins.py
index 6253a43..29dc639 100644
--- a/content_plugins/plugins/mixins.py
+++ b/content_plugins/plugins/mixins.py
@@ -3,6 +3,8 @@ import os
 from django.db import models
 from django.utils.translation import ugettext_lazy as _
 
+from shared.utils.text import slugify
+
 
 class StyleField(models.CharField):
     """
@@ -23,7 +25,8 @@ class StyleMixin(models.Model):
         abstract = True
 
     def get_style_slug(self):
-        return getattr(self, 'style', None) or 'default'
+        style = getattr(self, 'style', None) or 'default'
+        return slugify(style).replace("_", "-")
 
     # # Compatibiliy with super classes not having a prefixed_path method
     # def prefixed_path(self, path):