--- a/Preferences/__init__.py	Tue Jan 30 19:18:54 2018 +0100
+++ b/Preferences/__init__.py	Thu Feb 01 19:25:47 2018 +0100
@@ -1252,7 +1252,7 @@
         try:
             # Qt 5.10+
             cls.webBrowserDefaults.update({
-                "AllowWindowActivationFromJavaScript": 
+                "AllowWindowActivationFromJavaScript":
                     webEngineSettings.testAttribute(
                         QWebEngineSettings.AllowWindowActivationFromJavaScript
                     ),