diff --git a/docs/samples/browser-plugin-presence/style.css b/docs/samples/browser-plugin-presence/style.css
index c0497cfb2f3..e8bca7f3eff 100644
--- a/docs/samples/browser-plugin-presence/style.css
+++ b/docs/samples/browser-plugin-presence/style.css
@@ -107,7 +107,6 @@ button:disabled, input[type="button"]:disabled {
 
 button.btn--green, input[type="button"].btn--green {
   color: #fff;
-  color: var(--md-button-join-text-color, #fff);
   background-color: #00ab50;
   border-color: transparent;
 }