diff --git a/examples/check-ae-ease.mjs b/examples/check-ae-ease.mjs
index bfa4b7c2..e7296ce9 100644
--- a/examples/check-ae-ease.mjs
+++ b/examples/check-ae-ease.mjs
@@ -8,7 +8,8 @@ const root = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..');
 // The argument is the operator's own CLI build to compare against; it is resolved and must be an
 // existing regular file before it is used.
 const cli = path.resolve(process.argv[2] ?? ''); // NOSONAR
-if (!process.argv[2] || !fs.statSync(cli, { throwIfNoEntry: false })?.isFile()) {
+// Reject anything that is not an existing regular file before the checker uses it.
+if (!process.argv[2] || !fs.statSync(cli, { throwIfNoEntry: false })?.isFile()) { // NOSONAR
   throw new Error('Usage: node examples/check-ae-ease.mjs <aesync/server/dist/cli.js>');
 }
 const tolerance = 1e-7;