diff --git a/executors/dart_web/bin/collator.dart b/executors/dart_web/bin/collator.dart
index 5888ccae..26db0e1f 100644
--- a/executors/dart_web/bin/collator.dart
+++ b/executors/dart_web/bin/collator.dart
@@ -11,7 +11,7 @@ String testCollationShort(String jsonEncoded) {
   var json =
       jsonDecode(jsonEncoded); // For the moment, use strings for easier interop
   // Global default locale
-  var testLocale = '';
+  var testLocale = 'en';
   Map<String, dynamic> outputLine;
 
   // Set up collator object with optional locale and testOptions.