diff --git a/projects/addon-doc/components/main/main.template.html b/projects/addon-doc/components/main/main.template.html
index 68a7f6d4ba19..852ae7f54d0b 100644
--- a/projects/addon-doc/components/main/main.template.html
+++ b/projects/addon-doc/components/main/main.template.html
@@ -11,6 +11,7 @@
         <ng-content select="tuiDocHeader" />
         <button
             appearance="secondary"
+            aria-label="Switch between dark and light mode"
             size="s"
             tuiIconButton
             type="button"