diff --git a/test/widgets/controller_test.dart b/test/widgets/controller_test.dart
index d162a543..4d147024 100644
--- a/test/widgets/controller_test.dart
+++ b/test/widgets/controller_test.dart
@@ -372,6 +372,7 @@ void main() {
             'blockquote' => Attribute.blockQuote,
             'indent' => Attribute.indentL2,
             'direction' => Attribute.rtl,
+            'line-height' => Attribute.lineHeightNormal,
             String() => throw UnimplementedError(key)
           };