diff --git a/ChangeLog b/ChangeLog
index d3325ac6b..6517450ce 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2011-02-09  Colin Watson  <cjwatson@ubuntu.com>
+
+	* util/grub-install.in: Remove unnecessary brackets from tr
+	arguments.
+	* util/grub.d/10_hurd.in: Likewise.
+	* util/grub.d/10_kfreebsd.in: Likewise.
+	* util/grub.d/10_linux.in: Likewise.
+	* util/grub.d/20_linux_xen.in: Likewise.
+	Reported by: Jamie Heilman.  Fixes Debian bug #612564.
+
 2011-02-08  Colin Watson  <cjwatson@ubuntu.com>
 
 	* include/grub/file.h (not_easly_seekable): Rename to ...
diff --git a/util/grub-install.in b/util/grub-install.in
index 1ae00b2fd..af3034e03 100644
--- a/util/grub-install.in
+++ b/util/grub-install.in
@@ -64,7 +64,7 @@ if test -f "${sysconfdir}/default/grub" ; then
     . "${sysconfdir}/default/grub"
 fi
 
-bootloader_id="$(echo "$GRUB_DISTRIBUTOR" | tr '[A-Z]' '[a-z]' | cut -d' ' -f1)"
+bootloader_id="$(echo "$GRUB_DISTRIBUTOR" | tr 'A-Z' 'a-z' | cut -d' ' -f1)"
 if test -z "$bootloader_id"; then
     bootloader_id=grub
 fi
diff --git a/util/grub.d/10_hurd.in b/util/grub.d/10_hurd.in
index eeb441aa4..8c54eab97 100644
--- a/util/grub.d/10_hurd.in
+++ b/util/grub.d/10_hurd.in
@@ -28,7 +28,7 @@ if [ "x${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 b026812a7..dce5e945c 100644
--- a/util/grub.d/10_kfreebsd.in
+++ b/util/grub.d/10_kfreebsd.in
@@ -31,7 +31,7 @@ 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 ${CLASS}"
   ;;
   *)
 	OS="FreeBSD"
diff --git a/util/grub.d/10_linux.in b/util/grub.d/10_linux.in
index a09c3e687..491d2b5ce 100644
--- a/util/grub.d/10_linux.in
+++ b/util/grub.d/10_linux.in
@@ -32,7 +32,7 @@ if [ "x${GRUB_DISTRIBUTOR}" = "x" ] ; then
   OS=GNU/Linux
 else
   OS="${GRUB_DISTRIBUTOR} 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
diff --git a/util/grub.d/20_linux_xen.in b/util/grub.d/20_linux_xen.in
index ee49cd903..356219e1d 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