diff --git a/combo/apps/maps/models.py b/combo/apps/maps/models.py
index 9a54c795..b3f9d66d 100644
--- a/combo/apps/maps/models.py
+++ b/combo/apps/maps/models.py
@@ -113,7 +113,7 @@ class MapLayer(models.Model):
 
     def save(self, *args, **kwargs):
         if not self.slug:
-            base_slug = slugify(self.label)
+            base_slug = slugify(self.label)[:45]
             slug = base_slug
             i = 1
             while True: