diff --git a/packages/mermaid/src/dagre-wrapper/nodes.js b/packages/mermaid/src/dagre-wrapper/nodes.js
index b842fa9a5..410703f6c 100644
--- a/packages/mermaid/src/dagre-wrapper/nodes.js
+++ b/packages/mermaid/src/dagre-wrapper/nodes.js
@@ -602,6 +602,8 @@ const doublecircle = async (parent, node) => {
   const outerCircle = circleGroup.insert('circle');
   const innerCircle = circleGroup.insert('circle');
 
+  circleGroup.attr('class', node.class);
+
   // center the circle around its coordinate
   outerCircle
     .attr('style', node.style)