diff --git a/tools/@aws-cdk/prlint/lint.ts b/tools/@aws-cdk/prlint/lint.ts
index e2c9e3bc0c60c..1c79783bc49c2 100644
--- a/tools/@aws-cdk/prlint/lint.ts
+++ b/tools/@aws-cdk/prlint/lint.ts
@@ -266,7 +266,7 @@ export class PullRequestLinter {
     }
 
     const comments = await this.client.issues.listComments(this.issueParams);
-    if (comments.data.find(comment => comment.body?.includes("Exemption Request"))) {
+    if (comments.data.find(comment => comment.body?.toLowerCase().includes("exemption request"))) {
       body += '\n\n✅ A exemption request has been requested. Please wait for a maintainer\'s review.';
     }
     await this.client.issues.createComment({