diff --git a/plugins/node/opentelemetry-instrumentation-express/test/fixtures/use-express-regex.mjs b/plugins/node/opentelemetry-instrumentation-express/test/fixtures/use-express-regex.mjs
index 8fc412841b..d674342dd6 100644
--- a/plugins/node/opentelemetry-instrumentation-express/test/fixtures/use-express-regex.mjs
+++ b/plugins/node/opentelemetry-instrumentation-express/test/fixtures/use-express-regex.mjs
@@ -61,7 +61,7 @@ app.get(['/test/array1', /\/test\/array[2-9]/], (_req, res) => {
   res.send({ response: 'response 3' });
 });
 
-app.get(['/test', 6, /test/], (_req, res) => {
+app.get(['/test', '6', /test/], (_req, res) => {
   res.send({ response: 'response 4' });
 });