diff --git a/modules/sheets/pokemonCharacterSheet.js b/modules/sheets/pokemonCharacterSheet.js
index 5af4827..dfd49a4 100644
--- a/modules/sheets/pokemonCharacterSheet.js
+++ b/modules/sheets/pokemonCharacterSheet.js
@@ -89,7 +89,7 @@ export default class pokemonCharacterSheet extends api.HandlebarsApplicationMixi
         console.log("Rendering with "+this.tab+" open");
         tabs.activate(this.tab);
 
-        tabs.callback = function(){
+        tabs.callback = () => {
             console.log("Switching to "+tabs.active);
             this.tab = tabs.active;
             context.system.tab = tabs.active;
diff --git a/system.json b/system.json
index 5429559..f27fc01 100644
--- a/system.json
+++ b/system.json
@@ -1,5 +1,5 @@
 {
-    "version": "0.0.54",
+    "version": "0.0.55",
     "id": "pokemon",
     "title": "Pokémon TTRPG",
     "description": "A Pokémon TTRPG",
diff --git a/system.zip b/system.zip
index bc1f9cb..d17143a 100644
Binary files a/system.zip and b/system.zip differ