diff --git a/qutebrowser/browser/webengine/webview.py b/qutebrowser/browser/webengine/webview.py
index e89d01a88..f29b67708 100644
--- a/qutebrowser/browser/webengine/webview.py
+++ b/qutebrowser/browser/webengine/webview.py
@@ -72,7 +72,13 @@ class WebEngineView(QWebEngineView):
         if proxy is not None:
             return proxy
 
-        children = self.findChildren(QWidget)
+        # We only want the RenderWidgetHostViewQtDelegateWidget
+        # (which is a QWidget) but not e.g. a QMenu.
+        # pylint: disable=unidiomatic-typecheck
+        children = [child for child in self.findChildren(QWidget)
+                    if type(child) == QWidget]
+        # pylint: enable=unidiomatic-typecheck
+
         if not children:
             return None