diff --git a/mkdocs.yml b/mkdocs.yml
index 1bb3514..d3c4580 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -16,7 +16,7 @@ theme:
   palette:
     - scheme: default
       toggle:
-        icon:
+        icon: material/toggle-switch-off-outline
         name: Switch to dark mode
       primary: teal
       accent: purple