diff --git a/aio/tools/examples/run-example-e2e.js b/aio/tools/examples/run-example-e2e.js
index 63d92f1d31..ba6368401b 100644
--- a/aio/tools/examples/run-example-e2e.js
+++ b/aio/tools/examples/run-example-e2e.js
@@ -325,7 +325,7 @@ function getE2eSpecs(basePath, filter) {
 // Find all e2e specs in a given example folder.
 function getE2eSpecsFor(basePath, specFile, filter) {
   // Only get spec file at the example root.
-  const e2eSpecGlob = `${filter ? '*' + filter + '*' : '*'}/${specFile}`;
+  const e2eSpecGlob = `${filter ? `*${filter}*` : '*'}/${specFile}`;
   return globby(e2eSpecGlob, {cwd: basePath, nodir: true})
       .then(
           paths => paths.filter(file => !IGNORED_EXAMPLES.some(ignored => file.startsWith(ignored)))