diff --git a/src/common/SharePrompt/SharePrompt.js b/src/common/SharePrompt/SharePrompt.js
index 4887479d1..7648761db 100644
--- a/src/common/SharePrompt/SharePrompt.js
+++ b/src/common/SharePrompt/SharePrompt.js
@@ -55,6 +55,7 @@ const SharePrompt = (props) => {
 };
 
 SharePrompt.propTypes = {
+    className: PropTypes.string,
     url: PropTypes.string.isRequired,
     onClose: PropTypes.func
 };