diff --git a/system-config-printer-dnssd-URI.patch b/system-config-printer-dnssd-URI.patch
new file mode 100644
index 0000000..a96bb79
--- /dev/null
+++ b/system-config-printer-dnssd-URI.patch
@@ -0,0 +1,12 @@
+diff -up system-config-printer-1.2.96/newprinter.py.dnssd-URI system-config-printer-1.2.96/newprinter.py
+--- system-config-printer-1.2.96/newprinter.py.dnssd-URI	2011-01-18 11:59:38.000000000 +0100
++++ system-config-printer-1.2.96/newprinter.py	2011-01-18 12:00:05.000000000 +0100
+@@ -2156,7 +2156,7 @@ class NewPrinterGUI(GtkGUI):
+             entry.set_text(new_text)
+ 
+     def on_entNPTDevice_changed(self, ent):
+-        allowed_chars = string.letters+string.digits+'_-./:'
++        allowed_chars = string.letters+string.digits+'_-./:%()'
+         self.entry_changed(ent, allowed_chars)
+         self.setNPButtons()
+ 
diff --git a/system-config-printer.spec b/system-config-printer.spec
index 823f703..cbf5067 100644
--- a/system-config-printer.spec
+++ b/system-config-printer.spec
@@ -5,11 +5,12 @@
 Summary: A printer administration tool
 Name: system-config-printer
 Version: 1.2.96
-Release: 1%{?dist}
+Release: 2%{?dist}
 License: GPLv2+
 URL: http://cyberelk.net/tim/software/system-config-printer/
 Group: System Environment/Base
 Source0: http://cyberelk.net/tim/data/system-config-printer/1.2/%{name}-%{version}.tar.xz
+Patch1:  system-config-printer-dnssd-URI.patch 
 BuildRequires: cups-devel >= 1.2
 BuildRequires: desktop-file-utils >= 0.2.92
 BuildRequires: gettext-devel
@@ -66,6 +67,9 @@ printers.
 %prep
 %setup -q
 
+# Allow %, ( and ) characters in dnssd URI (bug #669820).
+%patch1 -p1 -b .dnssd-URI
+
 %build
 %configure --with-udev-rules
 
@@ -174,6 +178,9 @@ rm -rf %buildroot
 exit 0
 
 %changelog
+* Tue Jan 18 2011 Jiri Popelka <jpopelka@redhat.com> 1.2.96-2
+- Allow %, ( and ) characters in dnssd URI (bug #669820).
+
 * Mon Jan 17 2011 Jiri Popelka <jpopelka@redhat.com> 1.2.96-1
 - 1.2.96:
   - Remove reference to current printer on exit (bug #556548).