diff --git a/packages/google-cloud-language/samples/package.json b/packages/google-cloud-language/samples/package.json
index f95e29b9fd0..30d16f2d7af 100644
--- a/packages/google-cloud-language/samples/package.json
+++ b/packages/google-cloud-language/samples/package.json
@@ -5,7 +5,7 @@
   "license": "Apache Version 2.0",
   "author": "Google Inc.",
   "scripts": {
-    "test": "cd ..; npm run st -- language/system-test/*"
+    "test": "cd ..; npm run st -- language/system-test/*.test.js"
   },
   "dependencies": {
     "@google-cloud/language": "^0.6.0",