diff --git a/app/javascript/sdk/sdk.js b/app/javascript/sdk/sdk.js
index 95d132258..3712f6186 100644
--- a/app/javascript/sdk/sdk.js
+++ b/app/javascript/sdk/sdk.js
@@ -38,7 +38,7 @@ export const SDK_CSS = `
   border: 0;
 }
 
-.woot-widget-bubble {
+.woot-widget-bubble[class] {
   background: #1f93ff;
   border-radius: 100px;
   border-width: 0px;