diff --git a/src/plugins/help/textbrowserhelpviewer.cpp b/src/plugins/help/textbrowserhelpviewer.cpp
index fd6c36c4d4a..6447190ca96 100644
--- a/src/plugins/help/textbrowserhelpviewer.cpp
+++ b/src/plugins/help/textbrowserhelpviewer.cpp
@@ -372,6 +372,7 @@ void TextBrowserHelpWidget::wheelEvent(QWheelEvent *e)
             // view in a broken way. We handle it properly through the sequence:
             // HelpViewer::wheelEvent() -> LocalHelpManager::setFontZoom() ->
             // HelpViewer::setFontZoom() -> TextBrowserHelpViewer::setFontAndScale().
+            e->ignore();
             return;
         }
     }