diff --git a/grub2-fix-unquoted-string-in-class.patch b/grub2-fix-unquoted-string-in-class.patch
new file mode 100644
index 0000000..851dd2c
--- /dev/null
+++ b/grub2-fix-unquoted-string-in-class.patch
@@ -0,0 +1,77 @@
+From 7c8906e0f3827322469655bb013247f7ce60fcd9 Mon Sep 17 00:00:00 2001
+From: Michael Chang <mchang@suse.com>
+Date: Tue, 4 Dec 2012 15:24:43 +0800
+Subject: [PATCH] Fix unquoted string in --class
+
+References: bnc#788322
+Patch-Mainline: no
+
+If GRUB_DISTRIBUTOR contains special character such as '$', it would
+lead to syntax error by the grub2-script-check even though user
+correctly quote them in single quotes.
+
+The cause is that grub2 scripts use not quote the strings from
+GRUB_DISTRIBUTOR in --class options thus keywords interpreted by the
+script parser. The fix is to add single quote to the string.
+---
+ util/grub.d/10_hurd.in      |    2 +-
+ util/grub.d/10_kfreebsd.in  |    2 +-
+ util/grub.d/10_linux.in     |    2 +-
+ util/grub.d/20_linux_xen.in |    2 +-
+ 4 files changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/util/grub.d/10_hurd.in b/util/grub.d/10_hurd.in
+index 45f0ad3..5afc079 100644
+--- a/util/grub.d/10_hurd.in
++++ b/util/grub.d/10_hurd.in
+@@ -32,7 +32,7 @@ if [ "x${GRUB_DISTRIBUTOR}" = "x" ] ; then
+   OS=GNU
+ else
+   OS="${GRUB_DISTRIBUTOR} GNU/Hurd"
+-  CLASS="--class $(echo ${GRUB_DISTRIBUTOR} | tr 'A-Z' 'a-z' | cut -d' ' -f1) ${CLASS}"
++  CLASS="--class '$(echo ${GRUB_DISTRIBUTOR} | tr 'A-Z' 'a-z' | cut -d' ' -f1)' ${CLASS}"
+ fi
+ 
+ at_least_one=false
+diff --git a/util/grub.d/10_kfreebsd.in b/util/grub.d/10_kfreebsd.in
+index b0e84e2..4ec8d96 100644
+--- a/util/grub.d/10_kfreebsd.in
++++ b/util/grub.d/10_kfreebsd.in
+@@ -30,7 +30,7 @@ CLASS="--class os"
+ case "${GRUB_DISTRIBUTOR}" in
+   Debian)
+ 	OS="${GRUB_DISTRIBUTOR} GNU/kFreeBSD"
+-	CLASS="--class $(echo ${GRUB_DISTRIBUTOR} | tr 'A-Z' 'a-z' | cut -d' ' -f1) --class gnu-kfreebsd --class gnu ${CLASS}"
++	CLASS="--class '$(echo ${GRUB_DISTRIBUTOR} | tr 'A-Z' 'a-z' | cut -d' ' -f1)' --class gnu-kfreebsd --class gnu ${CLASS}"
+   ;;
+   *)
+ 	OS="FreeBSD"
+diff --git a/util/grub.d/10_linux.in b/util/grub.d/10_linux.in
+index b2f65c0..40f8651 100644
+--- a/util/grub.d/10_linux.in
++++ b/util/grub.d/10_linux.in
+@@ -32,7 +32,7 @@ if [ "x${GRUB_DISTRIBUTOR}" = "x" ] ; then
+   OS=GNU/Linux
+ else
+   OS="${GRUB_DISTRIBUTOR}"
+-  CLASS="--class $(echo ${GRUB_DISTRIBUTOR} | tr 'A-Z' 'a-z' | cut -d' ' -f1) ${CLASS}"
++  CLASS="--class '$(echo ${GRUB_DISTRIBUTOR} | tr 'A-Z' 'a-z' | cut -d' ' -f1)' ${CLASS}"
+ fi
+ 
+ # loop-AES arranges things so that /dev/loop/X can be our root device, but
+diff --git a/util/grub.d/20_linux_xen.in b/util/grub.d/20_linux_xen.in
+index 29184c2..f1ce61e 100644
+--- a/util/grub.d/20_linux_xen.in
++++ b/util/grub.d/20_linux_xen.in
+@@ -32,7 +32,7 @@ if [ "x${GRUB_DISTRIBUTOR}" = "x" ] ; then
+   OS=GNU/Linux
+ else
+   OS="${GRUB_DISTRIBUTOR} GNU/Linux"
+-  CLASS="--class $(echo ${GRUB_DISTRIBUTOR} | tr 'A-Z' 'a-z' | cut -d' ' -f1) ${CLASS}"
++  CLASS="--class '$(echo ${GRUB_DISTRIBUTOR} | tr 'A-Z' 'a-z' | cut -d' ' -f1)' ${CLASS}"
+ fi
+ 
+ # loop-AES arranges things so that /dev/loop/X can be our root device, but
+-- 
+1.7.3.4
+
diff --git a/grub2.changes b/grub2.changes
index be1197b..8155558 100644
--- a/grub2.changes
+++ b/grub2.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Tue Jan  8 08:09:01 UTC 2013 - mchang@suse.com
+
+- add grub2-fix-unquoted-string-in-class.patch (bnc#788322)
+
 -------------------------------------------------------------------
 Tue Jan  8 07:09:47 UTC 2013 - arvidjaar@gmail.com
 
diff --git a/grub2.spec b/grub2.spec
index 5fa49d8..30900ec 100644
--- a/grub2.spec
+++ b/grub2.spec
@@ -134,6 +134,7 @@ Patch24:        grub2-secureboot-provide-linuxefi-config.patch
 Patch25:        30_os-prober_UEFI_support.patch
 Patch26:        grub2-fix-enumeration-of-extended-partition.patch
 Patch27:        grub2-add-device-to-os_prober-linux-menuentry.patch
+Patch28:        grub2-fix-unquoted-string-in-class.patch
 PreReq:         perl-Bootloader
 Requires:       gettext-runtime
 %if 0%{?suse_version} >= 1140
@@ -248,6 +249,7 @@ mv docs/grub.texi docs/grub2.texi
 %patch25 -p1
 %patch26 -p1
 %patch27 -p1
+%patch28 -p1
 cd ..
 
 # README.openSUSE