diff --git a/packages/mermaid/src/dagre-wrapper/shapes/util.js b/packages/mermaid/src/dagre-wrapper/shapes/util.js
index 079125e3a6..97a1bef8d1 100644
--- a/packages/mermaid/src/dagre-wrapper/shapes/util.js
+++ b/packages/mermaid/src/dagre-wrapper/shapes/util.js
@@ -80,7 +80,9 @@ export const labelHelper = async (parent, node, _classes, isNode) => {
                     ? getConfig().fontSize
                     : window.getComputedStyle(document.body).fontSize;
                   const enlargingFactor = 5;
-                  img.style.width = parseInt(bodyFontSize, 10) * enlargingFactor + 'px';
+                  const width = parseInt(bodyFontSize, 10) * enlargingFactor + 'px';
+                  img.style.minWidth = width;
+                  img.style.maxWidth = width;
                 } else {
                   img.style.width = '100%';
                 }