--- a/Preferences/ConfigurationPages/HelpViewersPage.py	Tue Oct 15 19:13:32 2013 +0200
+++ b/Preferences/ConfigurationPages/HelpViewersPage.py	Wed Oct 16 15:16:54 2013 +0200
@@ -66,7 +66,8 @@
         elif self.customViewerButton.isChecked():
             hvId = 4
         Preferences.setHelp("HelpViewerType", hvId)
-        Preferences.setHelp("CustomViewer",
+        Preferences.setHelp(
+            "CustomViewer",
             self.customViewerEdit.text())
         
     @pyqtSlot()