diff --git a/packages/mermaid/src/diagrams/common/svgDrawCommon.ts b/packages/mermaid/src/diagrams/common/svgDrawCommon.ts
index 6bf445ecf7..cf962f33ec 100644
--- a/packages/mermaid/src/diagrams/common/svgDrawCommon.ts
+++ b/packages/mermaid/src/diagrams/common/svgDrawCommon.ts
@@ -21,7 +21,9 @@ export const drawRect = (element: SVG | Group, rectData: RectData): D3RectElemen
   rectElement.attr('stroke', rectData.stroke);
   rectElement.attr('width', rectData.width);
   rectElement.attr('height', rectData.height);
-  rectElement.attr('name', rectData.name);
+  if (rectData.name) {
+    rectElement.attr('name', rectData.name);
+  }
   rectData.rx !== undefined && rectElement.attr('rx', rectData.rx);
   rectData.ry !== undefined && rectElement.attr('ry', rectData.ry);