diff --git a/packages/mermaid/src/dagre-wrapper/createLabel.js b/packages/mermaid/src/dagre-wrapper/createLabel.js
index d2b59b5a9..942280575 100644
--- a/packages/mermaid/src/dagre-wrapper/createLabel.js
+++ b/packages/mermaid/src/dagre-wrapper/createLabel.js
@@ -45,7 +45,7 @@ function addHtmlLabel(node) {
  * @deprecated svg-util/createText instead
  */
 const createLabel = (_vertexText, style, isTitle, isNode) => {
-  let vertexText = _vertexText || '';
+  let vertexText = _vertexText ?? '';
   if (typeof vertexText === 'object') {
     vertexText = vertexText[0];
   }