diff --git a/ChangeLog b/ChangeLog
index 611e198be..f850b8606 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2012-02-25  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* util/grub-mknetdir.in: Remove erroneous reference to install_device.
+
 2012-02-25  Vladimir Serbinenko  <phcoder@gmail.com>
 
 	* grub-core/normal/charset.c (grub_utf8_to_ucs4_alloc): Fix return type
diff --git a/util/grub-mknetdir.in b/util/grub-mknetdir.in
index eec170a74..67b258dd8 100644
--- a/util/grub-mknetdir.in
+++ b/util/grub-mknetdir.in
@@ -41,7 +41,6 @@ rootdir=/srv/tftp
 grub_prefix=`echo /boot/grub | sed ${transform}`
 modules=
 
-install_device=
 no_floppy=
 recheck=no
 debug=no
@@ -60,7 +59,7 @@ itanium_dir="${libdir}/$(echo ${PACKAGE_TARNAME} | sed ${transform})/ia64-efi"
 # Usage: usage
 # Print the usage.
 usage () {
-    gettext_printf "Usage: %s [OPTION] install_device\n" "$self"
+    gettext_printf "Usage: %s [OPTION]\n" "$self"
     gettext; echo "Install GRUB on your drive."; echo
     echo
     printf "  -h, --help              %s\n" "$(gettext "print this message and exit")"
@@ -147,12 +146,11 @@ do
 	exit 1
 	;;
     *)
-	if test "x$install_device" != x; then
-	    echo "More than one install_devices?" 1>&2
-	    usage
-	    exit 1
-	fi
-	install_device="${option}" ;;
+	gettext_printf "Unknown extra argument \`%s'." "$option" 1>&2
+	echo 1>&2
+	usage
+	exit 1
+	;;
     esac
 done