diff --git a/src/calibre/gui2/preferences/__init__.py b/src/calibre/gui2/preferences/__init__.py
index 1669e24059..649a58448d 100644
--- a/src/calibre/gui2/preferences/__init__.py
+++ b/src/calibre/gui2/preferences/__init__.py
@@ -319,9 +319,12 @@ def show_config_widget(category, name, gui=None, show_restart_msg=False,
     :return: True iff a restart is required for the changes made by the user to
     take effect
     '''
+    from calibre.gui2 import gprefs
     pl = get_plugin(category, name)
     d = ConfigDialog(parent)
     d.resize(750, 550)
+    conf_name = 'config_widget_dialog_geometry_%s_%s'%(category, name)
+    geom = gprefs.get(conf_name, None)
     d.setWindowTitle(_('Configure ') + name)
     d.setWindowIcon(QIcon(I('config.png')))
     bb = QDialogButtonBox(d)
@@ -345,7 +348,11 @@ def show_config_widget(category, name, gui=None, show_restart_msg=False,
         mygui = True
     w.genesis(gui)
     w.initialize()
+    if geom is not None:
+        d.restoreGeometry(geom)
     d.exec_()
+    geom = bytearray(d.saveGeometry())
+    gprefs[conf_name] = geom
     rr = getattr(d, 'restart_required', False)
     if show_restart_msg and rr:
         from calibre.gui2 import warning_dialog