diff --git a/packages/mermaid/src/utils/subGraphTitleMargins.ts b/packages/mermaid/src/utils/subGraphTitleMargins.ts
index af07a6c96..426f4770d 100644
--- a/packages/mermaid/src/utils/subGraphTitleMargins.ts
+++ b/packages/mermaid/src/utils/subGraphTitleMargins.ts
@@ -1,4 +1,4 @@
-import { FlowchartDiagramConfig } from '../config.type.js';
+import type { FlowchartDiagramConfig } from '../config.type.js';
 
 export const getSubGraphTitleMargins = ({
   flowchart,