diff --git a/changelog.md b/changelog.md
index 608c6e5..890c345 100644
--- a/changelog.md
+++ b/changelog.md
@@ -23,6 +23,7 @@ These changes will (most likely) be included in the next version.
 - Boss rewards also support the `all()` and `random()` functions as well as the `nothing` keyword.
 - New command `/ma addreward <player> <thing>` can be used to add a reward to an arena player's reward list. This can be useful for hooking into the rewards system from scripts or other plugins.
 - The Root Target ability now uses potion effects (slowness, slow falling, and negative jump boost) instead of repeated teleports. This should make for a smoother root experience.
+- Permissions for arenas and classes are now based on "slugs". It is now possible to configure permissions for arenas and classes with multi-word names (including "My Items"). Check the Permissions page on the wiki for details.
 - Using `spectate-on-death: true` no longer forces players out to their join location/exit warp before moving them to the spectator area. This should prevent "jumpy" behavior in multi-world setups.
 - Players should now properly respawn at the spectator area rather than at world spawn on servers with plugins that override respawn locations.
 - Config-files with missing `pet-items` nodes no longer errors. A missing `pet-items` node in `global-settings` is treated as empty, i.e. no pet items will be registered.
diff --git a/src/main/java/com/garbagemule/MobArena/ArenaClass.java b/src/main/java/com/garbagemule/MobArena/ArenaClass.java
index e9c7abc..a809ba0 100644
--- a/src/main/java/com/garbagemule/MobArena/ArenaClass.java
+++ b/src/main/java/com/garbagemule/MobArena/ArenaClass.java
@@ -148,8 +148,13 @@ public class ArenaClass
     }
 
     public boolean hasPermission(Player p) {
-        String perm = "mobarena.classes." + configName;
-        return !p.isPermissionSet(perm) || p.hasPermission(perm);
+        String key = "mobarena.classes." + slug;
+        if (p.isPermissionSet(key)) {
+            return p.hasPermission(key);
+        }
+
+        // Permissive by default.
+        return true;
     }
 
     /**
diff --git a/src/main/java/com/garbagemule/MobArena/ArenaImpl.java b/src/main/java/com/garbagemule/MobArena/ArenaImpl.java
index d81824b..87e0455 100644
--- a/src/main/java/com/garbagemule/MobArena/ArenaImpl.java
+++ b/src/main/java/com/garbagemule/MobArena/ArenaImpl.java
@@ -680,8 +680,13 @@ public class ArenaImpl implements Arena
 
     @Override
     public boolean hasPermission(Player p) {
-        String perm = "mobarena.arenas." + name;
-        return !p.isPermissionSet(perm) || p.hasPermission(perm);
+        String key = "mobarena.arenas." + slug;
+        if (p.isPermissionSet(key)) {
+            return p.hasPermission(key);
+        }
+
+        // Permissive by default.
+        return true;
     }
 
     @Override