diff --git a/packages/mermaid/src/diagrams/block/blockDiagram.ts b/packages/mermaid/src/diagrams/block/blockDiagram.ts
index 1cd619749..667783f49 100644
--- a/packages/mermaid/src/diagrams/block/blockDiagram.ts
+++ b/packages/mermaid/src/diagrams/block/blockDiagram.ts
@@ -1,6 +1,6 @@
 import { DiagramDefinition } from '../../diagram-api/types.js';
 // @ts-ignore: jison doesn't export types
-import parser from './parser/blockDiagram.jison';
+import parser from './parser/block.jison';
 import db from './blockDB.js';
 import renderer from './blockRenderer.js';
 import { prepareTextForParsing } from './blockUtils.js';