diff --git a/static/js/chart_controls.js b/static/js/chart_controls.js
index 1415315..c27b2db 100644
--- a/static/js/chart_controls.js
+++ b/static/js/chart_controls.js
@@ -60,7 +60,7 @@ document.addEventListener("DOMContentLoaded", function () {
 
     // ——— Podział na kategorie ———
     toggleCategory?.addEventListener("click", function () {
-        const active = this.classList.contains("btn-outline-success");
+        const active = this.classList.contains("btn-outline-light");
         if (active) {
             this.classList.remove("btn-outline-success");
             this.classList.add("btn-outline-light");