--- a/WebBrowser/WebBrowserWindow.py	Wed Jul 04 19:36:49 2018 +0200
+++ b/WebBrowser/WebBrowserWindow.py	Wed Jul 04 19:38:44 2018 +0200
@@ -174,7 +174,8 @@
                 self.__fromEric or qthelp or bool(searchWord))
             self.__initActions()
         else:
-            if Preferences.getWebBrowser("WebInspectorEnabled"):
+            if qVersionTuple() < (5, 11, 0) and \
+               Preferences.getWebBrowser("WebInspectorEnabled"):
                 os.environ["QTWEBENGINE_REMOTE_DEBUGGING"] = \
                     str(Preferences.getWebBrowser("WebInspectorPort"))