diff --git a/defaults/initrd.scripts b/defaults/initrd.scripts
index 5d3a220b..1e557f5a 100644
--- a/defaults/initrd.scripts
+++ b/defaults/initrd.scripts
@@ -894,7 +894,7 @@ cmdline_hwopts() {
 				MY_HWOPTS="${MY_HWOPTS} $x"
 			elif [ "${y}" = "no${x}" ]
 			then
-				MY_HWOPTS="`echo ${MY_HWOPTS} | sed -e \"s/${x}//g\" -`"
+				MY_HWOPTS="$(echo ${MY_HWOPTS} | sed -e "s/${x}//g" -)"
 			fi
 			if [ "$(echo ${y} | cut -b -7)" = "keymap=" ]
 			then