diff --git a/app/views/projects/cycle_analytics/show.html.haml b/app/views/projects/cycle_analytics/show.html.haml
index 7000b289f75de82abe1bb5719d43024a969ef627..7e7b73355976014a3c33bcdb2cbff506ccbfbc6b 100644
--- a/app/views/projects/cycle_analytics/show.html.haml
+++ b/app/views/projects/cycle_analytics/show.html.haml
@@ -9,8 +9,8 @@
 #cycle-analytics{ class: container_class, "v-cloak" => "true", data: { request_path: project_cycle_analytics_path(@project) } }
   - if @cycle_analytics_no_data
     .landing.content-block{ "v-if" => "!isOverviewDialogDismissed" }
-      %button.dismiss-button{ type: 'button', 'aria-label': 'Dismiss Cycle Analytics introduction box' }
-        = icon("times", "@click" => "dismissOverviewDialog()")
+      %button.dismiss-button{ type: 'button', 'aria-label': 'Dismiss Cycle Analytics introduction box', "@click" => "dismissOverviewDialog()" }
+        = icon("times")
       .svg-container
         = custom_icon('icon_cycle_analytics_splash')
       .inner-content
diff --git a/changelogs/unreleased/35164-cycle-analytics-firefox.yml b/changelogs/unreleased/35164-cycle-analytics-firefox.yml
new file mode 100644
index 0000000000000000000000000000000000000000..0b7115136ca1c35c1ce03edbc291e9aa16aef42f
--- /dev/null
+++ b/changelogs/unreleased/35164-cycle-analytics-firefox.yml
@@ -0,0 +1,4 @@
+---
+title: allow closing Cycle Analytics intro box in firefox
+merge_request:
+author: