diff --git a/packages/flutter_tools/lib/src/localizations/gen_l10n_types.dart b/packages/flutter_tools/lib/src/localizations/gen_l10n_types.dart
index e62b890409..6cea9c6b6a 100644
--- a/packages/flutter_tools/lib/src/localizations/gen_l10n_types.dart
+++ b/packages/flutter_tools/lib/src/localizations/gen_l10n_types.dart
@@ -639,7 +639,7 @@ class AppResourceBundle {
                 'The locale specified in @@locale and the arb filename do not match. \n'
                 'Please make sure that they match, since this prevents any confusion \n'
                 'with which locale to use. Otherwise, specify the locale in either the \n'
-                'filename of the @@locale key only.\n'
+                'filename or the @@locale key only.\n'
                 'Current @@locale value: $localeString\n'
                 'Current filename extension: $parserLocaleString'
               );