diff --git a/src/main/java/com/garbagemule/MobArena/ArenaImpl.java b/src/main/java/com/garbagemule/MobArena/ArenaImpl.java
index f67b611..34d9e98 100644
--- a/src/main/java/com/garbagemule/MobArena/ArenaImpl.java
+++ b/src/main/java/com/garbagemule/MobArena/ArenaImpl.java
@@ -191,7 +191,8 @@ public class ArenaImpl implements Arena
 
         String defaultClassName = settings.getString("default-class", null);
         if (defaultClassName != null) {
-            this.defaultClass = classes.get(defaultClassName);
+            String slug = Slugs.create(defaultClassName);
+            this.defaultClass = classes.get(slug);
         }
 
         // Blocks and pets