diff --git a/assets/javascripts/discourse/initializers/discourse-calendar.js b/assets/javascripts/discourse/initializers/discourse-calendar.js
index 47cd20ecd..85308488d 100644
--- a/assets/javascripts/discourse/initializers/discourse-calendar.js
+++ b/assets/javascripts/discourse/initializers/discourse-calendar.js
@@ -71,7 +71,7 @@ function initializeDiscourseCalendar(api) {
       categoryEventNode.innerHTML = "";
     }
 
-    const browsedCategory = Category.findBySlugPathWithID(url);
+    const browsedCategory = Category.findBySlugPathWithID(url.split("?")[0]);
     if (!browsedCategory) {
       return;
     }
diff --git a/test/javascripts/acceptance/category-events-calendar-test.js b/test/javascripts/acceptance/category-events-calendar-test.js
index bd78d584d..95cc4e493 100644
--- a/test/javascripts/acceptance/category-events-calendar-test.js
+++ b/test/javascripts/acceptance/category-events-calendar-test.js
@@ -96,7 +96,7 @@ acceptance("Discourse Calendar - Category Events Calendar", function (needs) {
   });
 
   test("shows event calendar on category page", async (assert) => {
-    await visit("/c/bug/1");
+    await visit("/c/bug/1?foobar=true");
 
     assert
       .dom("#category-events-calendar")