diff --git a/prefs.py b/prefs.py
index 5a1ed4c2..c7ac8cc4 100644
--- a/prefs.py
+++ b/prefs.py
@@ -355,7 +355,11 @@ class PreferencesDialog(tk.Toplevel):
             for plugin in plug.PLUGINS_not_py3:
                 if plugin.folder: # 'system' ones have this set to None to suppress listing in Plugins prefs tab
                     nb.Label(plugsframe, text=plugin.name).grid(columnspan=2, padx=PADX*2, sticky=tk.W)
-            HyperlinkLabel(plugsframe, text=_('Information on migrating plugins'), background=nb.Label().cget('background'), url='https://github.com/EDCD/EDMarketConnector/blob/master/PLUGINS.md#migration-to-python-37', underline=True).grid(columnspan=2, padx=PADX, sticky=tk.W)
+            HyperlinkLabel(plugsframe, text=_('Information on migrating plugins'),
+                           background=nb.Label().cget(e 'background'),
+                           url='https://github.com/EDCD/EDMarketConnector/blob/main/PLUGINS.md#migration-to-python-37',
+                           underline=True
+            ).grid(columnspan=2, padx=PADX, sticky=tk.W)
         ############################################################
 
         disabled_plugins = [x for x in plug.PLUGINS if x.folder and not x.module]