diff --git a/packages/flutter_tools/test/dart_dependencies_test.dart b/packages/flutter_tools/test/dart_dependencies_test.dart
index 42b2b99a758..dbfdc26509b 100644
--- a/packages/flutter_tools/test/dart_dependencies_test.dart
+++ b/packages/flutter_tools/test/dart_dependencies_test.dart
@@ -92,7 +92,7 @@ void main() {
         builder.build();
         fail('expect an exception to be thrown.');
       } on DartDependencyException catch (error) {
-        expect(error.toString(), contains("Unable to parse URI"));
+        expect(error.toString(), contains('Unable to parse URI'));
       }
     });
   });