diff --git a/packages/mermaid/src/dagre-wrapper/createLabel.js b/packages/mermaid/src/dagre-wrapper/createLabel.js
index 22496a250..ab0be6353 100644
--- a/packages/mermaid/src/dagre-wrapper/createLabel.js
+++ b/packages/mermaid/src/dagre-wrapper/createLabel.js
@@ -60,7 +60,7 @@ const createLabel = (_vertexText, style, isTitle, isNode) => {
     const node = {
       isNode,
       label: decodeEntities(vertexText).replace(
-        /fa[blrs]?:fa-[\w-]+/g, // cspell: disable-line
+        /fa[bklrs]?:fa-[\w-]+/g, // cspell: disable-line
         (s) => `<i class='${s.replace(':', ' ')}'></i>`
       ),
       labelStyle: style.replace('fill:', 'color:'),
diff --git a/packages/mermaid/src/rendering-util/createText.ts b/packages/mermaid/src/rendering-util/createText.ts
index 725d65da6..c4cc2792c 100644
--- a/packages/mermaid/src/rendering-util/createText.ts
+++ b/packages/mermaid/src/rendering-util/createText.ts
@@ -192,7 +192,7 @@ export const createText = (
     const node = {
       isNode,
       label: decodeEntities(htmlText).replace(
-        /fa[blrs]?:fa-[\w-]+/g, // cspell: disable-line
+        /fa[bklrs]?:fa-[\w-]+/g, // cspell: disable-line
         (s) => `<i class='${s.replace(':', ' ')}'></i>`
       ),
       labelStyle: style.replace('fill:', 'color:'),