diff --git a/core/lib/presentation/views/html_viewer/html_content_viewer_widget.dart b/core/lib/presentation/views/html_viewer/html_content_viewer_widget.dart
index 36f6b39d6..6bcf85cbf 100644
--- a/core/lib/presentation/views/html_viewer/html_content_viewer_widget.dart
+++ b/core/lib/presentation/views/html_viewer/html_content_viewer_widget.dart
@@ -128,6 +128,7 @@ class _HtmlContentViewState extends State<HtmlContentViewer> {
       navigationDelegate: _onNavigation,
       gestureRecognizers: {
         Factory<LongPressGestureRecognizer>(() => LongPressGestureRecognizer()),
+        Factory<ScaleGestureRecognizer>(() => ScaleGestureRecognizer()),
       },
     );
   }