diff --git a/src/lib/button-toggle/button-toggle.scss b/src/lib/button-toggle/button-toggle.scss
index 7e35246ef013..52e391459aba 100644
--- a/src/lib/button-toggle/button-toggle.scss
+++ b/src/lib/button-toggle/button-toggle.scss
@@ -27,6 +27,7 @@ md-button-toggle {
   line-height: $md-button-toggle-line-height;
   padding: $md-button-toggle-padding;
   cursor: pointer;
+  user-select: none;
 }
 
 .md-button-toggle-label-content > * {