diff --git a/packages/mermaid/src/mermaidAPI.spec.ts b/packages/mermaid/src/mermaidAPI.spec.ts
index 7e8f46d06..b7ff578fb 100644
--- a/packages/mermaid/src/mermaidAPI.spec.ts
+++ b/packages/mermaid/src/mermaidAPI.spec.ts
@@ -750,7 +750,7 @@ describe('mermaidAPI', () => {
     it('should clean up comments when present in diagram definition', async () => {
       const diagram = await mermaidAPI.getDiagramFromText(
         `flowchart LR
-      %% this is a comment A -- text --> B{node}
+      %% This is a comment A -- text --> B{node}
       A -- text --> B -- text2 --> C`
       );
       expect(diagram).toBeInstanceOf(Diagram);