diff --git a/gutenprint-python36syntax.patch b/gutenprint-python36syntax.patch
new file mode 100644
index 0000000..5b28195
--- /dev/null
+++ b/gutenprint-python36syntax.patch
@@ -0,0 +1,94 @@
+--- gutenprint-5.2.12/src/cups/cups-genppdupdate.in.python36syntax	
++++ gutenprint-5.2.12/src/cups/cups-genppdupdate.in	
+@@ -287,7 +287,7 @@ def update_ppd (ppd_source_filename):
+     for line in orig.readlines ():
+         line.rstrip ()
+         if line.find ("*StpLocale:") != -1:
+-            match = re.search ("\*StpLocale:\s*\"(.*)\"$", line)
++            match = re.search (r'\*StpLocale:\s*"(.*)"$', line)
+             if match:
+                 groups = match.groups ()
+                 if len (groups) >= 1:
+@@ -295,26 +295,26 @@ def update_ppd (ppd_source_filename):
+                     orig_locale = locale
+                     valid = 1
+         elif line.startswith ("*LanguageVersion"):
+-            match = re.search ("^\*LanguageVersion:\s*(.*)$", line)
++            match = re.search (r'^\*LanguageVersion:\s*(.*)$', line)
+             if match:
+                 groups = match.groups ()
+                 if len (groups) >= 1:
+                     lingo = groups[0]
+         elif line.startswith ("*StpDriverName:"):
+-            match = re.search ("^\*StpDriverName:\s*\"(.*)\"$", line)
++            match = re.search (r'^\*StpDriverName:\s*"(.*)"$', line)
+             if match:
+                 groups = match.groups ()
+                 if len (groups) >= 1:
+                     driver = groups[0]
+                     valid = 1
+         elif line.find ("*%End of ") != -1 and driver == "":
+-            match = re.search ("^\*%End of\s*(.*).ppd$", line)
++            match = re.search (r'^\*%End of\s*(.*).ppd$', line)
+             if match:
+                 groups = match.groups ()
+                 if len (groups) >= 1:
+                     driver = groups[0]
+         elif line.startswith ("*StpPPDLocation:"):
+-            match = re.search ("^\*StpPPDLocation:\s*\"(.*)\"$", line)
++            match = re.search (r'^\*StpPPDLocation:\s*"(.*)"$', line)
+             if match:
+                 groups = match.groups ()
+                 if len (groups) >= 1:
+@@ -436,7 +436,7 @@ def update_ppd (ppd_source_filename):
+         lines = source_data.rstrip ().split ("\n")
+         source_data = ""
+         for line in lines:
+-            m = re.search ("(\*StpLocale:\s*\")(.*)(\")", line)
++            m = re.search (r'(\*StpLocale:\s*")(.*)(")', line)
+             if m:
+                 groups = m.groups ()
+                 line = groups[0] + orig_locale + groups[2]
+@@ -689,7 +689,7 @@ def get_ppd_data (fh, types, opts, resolutions, defaults, data):
+             line = line.strip ()
+ 
+             if (types or opts) and line.startswith ("*OpenUI"):
+-                m = re.search ("^\*OpenUI\s\*(\w+).*:\s(\w+)",
++                m = re.search (r'^\*OpenUI\s\*(\w+).*:\s(\w+)',
+                                line)
+                 if m:
+                     groups = m.groups ()
+@@ -704,7 +704,7 @@ def get_ppd_data (fh, types, opts, resolutions, defaults, data):
+ 
+                 optionlist = []
+             elif opts and line.startswith ("*%s" % cur_opt):
+-                m = re.search ("^\*%s\s*(\w+)[\/:]" % cur_opt, line)
++                m = re.search (r'^\*%s\s*(\w+)[\/:]' % cur_opt, line)
+                 if m:
+                     groups = m.groups()
+                     if len (groups) >= 1:
+@@ -717,7 +717,7 @@ def get_ppd_data (fh, types, opts, resolutions, defaults, data):
+                     old = s[2]
+                     resolution_map[old] = new
+             elif defaults and line.startswith ("*Default"):
+-                m = re.search ("^\*(\w+):\s*(\w+)", line)
++                m = re.search (r'^\*(\w+):\s*(\w+)', line)
+                 if m:
+                     groups = m.groups ()
+                     key = groups[0]
+@@ -844,13 +844,13 @@ def find_ppd (gutenprintfilename, drivername, lang, region):
+     global debug
+ 
+     key = '^\\*FileVersion:[ 	]*' + file_version
+-    match = re.search (".*/([^/]+\.[0-9]+\.[0-9]+)(\.sim)?(\.ppd)?(\.gz)?$",
++    match = re.search (r'.*/([^/]+\.[0-9]+\.[0-9]+)(\.sim)?(\.ppd)?(\.gz)?$',
+                        gutenprintfilename)
+     if not match:
+         return None
+ 
+     stored_name = match.groups ()[0]
+-    if re.search (".*/([^/]*)(\.sim)(\.ppd)?(\.gz)?$", gutenprintfilename):
++    if re.search (r'.*/([^/]*)(\.sim)(\.ppd)?(\.gz)?$', gutenprintfilename):
+         simplified = ".sim"
+     else:
+         simplified = ""
diff --git a/gutenprint.spec b/gutenprint.spec
index 2546135..c78b6f6 100644
--- a/gutenprint.spec
+++ b/gutenprint.spec
@@ -5,7 +5,7 @@
 Name:           gutenprint
 Summary:        Printer Drivers Package
 Version:        5.2.12
-Release:        3%{?dist}
+Release:        4%{?dist}
 URL:            http://gimp-print.sourceforge.net/
 Source0:        http://downloads.sourceforge.net/gimp-print/%{name}-%{VERSION}.tar.bz2
 # Post-install script to update CUPS native PPDs.
@@ -16,6 +16,7 @@ Patch2:         gutenprint-selinux.patch
 Patch3:         gutenprint-postscriptdriver.patch
 Patch4:         gutenprint-yyin.patch
 Patch5:         gutenprint-manpage.patch
+Patch6:         gutenprint-python36syntax.patch
 License:        GPLv2+
 
 Requires:       %{name}-libs%{?_isa} = %{version}-%{release}
@@ -118,6 +119,9 @@ Epson, HP and compatible printers.
 
 cp %{SOURCE1} src/cups/cups-genppdupdate.in
 
+# Python 3.6 invalid escape sequence deprecation fixes, COPYING as license (bug #1448303)
+%patch6 -p1 -b .python36syntax
+
 %build
 # autoreconf has been added due to bug #925535,
 # should be safe to remove once configure is Autoconf > 2.68 generated,
@@ -189,14 +193,15 @@ exit 0
 
 
 %files -f %{name}.lang
-%doc COPYING
+%license COPYING
 %{_bindir}/escputil
 %{_mandir}/man1/escputil.1*
 %{_datadir}/%{name}
 %{_libdir}/%{name}
 
 %files doc
-%doc COPYING AUTHORS NEWS README doc/FAQ.html doc/gutenprint-users-manual.odt doc/gutenprint-users-manual.pdf
+%doc AUTHORS NEWS README doc/FAQ.html doc/gutenprint-users-manual.odt doc/gutenprint-users-manual.pdf
+%license COPYING
 
 %files libs
 %{_libdir}/libgutenprint.so.*
@@ -235,6 +240,9 @@ exit 0
 %{_mandir}/man8/cups-genppd*.8*
 
 %changelog
+* Fri May 05 2017 Zdenek Dohnal <zdohnal@redhat.com> - 5.2.12-4
+- removing deprecated escape sequences because of Python-3.6, ship COPYING as license (patch provided by Ville Skyttä)
+
 * Fri Feb 10 2017 Fedora Release Engineering <releng@fedoraproject.org> - 5.2.12-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_26_Mass_Rebuild