diff -up system-config-printer-1.4.3/scp-dbus-service.py.decorator system-config-printer-1.4.3/scp-dbus-service.py
--- system-config-printer-1.4.3/scp-dbus-service.py.decorator	2013-09-17 12:21:06.000000000 +0100
+++ system-config-printer-1.4.3/scp-dbus-service.py	2013-10-25 16:28:33.498935837 +0100
@@ -367,7 +367,7 @@ class ConfigPrintingNewPrinterDialog(dbu
         pass
 
     @dbus.service.signal(dbus_interface=CONFIG_NEWPRINTERDIALOG_IFACE,
-                         signature='a{s}')
+                         signature='a(s)')
     def DriverDownloadChecked(self, installed_files):
         pass