diff --git a/dracut-module-setup.sh b/dracut-module-setup.sh
index 6af96fb..6f5d754 100755
--- a/dracut-module-setup.sh
+++ b/dracut-module-setup.sh
@@ -686,11 +686,11 @@ kdump_install_conf() {
         case "$_opt" in
         raw)
             _pdev=$(persistent_policy="by-id" kdump_get_persistent_dev $_val)
-            sed -i -e "s#^$_opt[[:space:]]\+$_val#$_opt $_pdev#" ${initdir}/tmp/$$-kdump.conf
+            sed -i -e "s#^${_opt}[[:space:]]\+$_val#$_opt $_pdev#" ${initdir}/tmp/$$-kdump.conf
             ;;
         ext[234]|xfs|btrfs|minix)
             _pdev=$(kdump_get_persistent_dev $_val)
-            sed -i -e "s#^$_opt[[:space:]]\+$_val#$_opt $_pdev#" ${initdir}/tmp/$$-kdump.conf
+            sed -i -e "s#^${_opt}[[:space:]]\+$_val#$_opt $_pdev#" ${initdir}/tmp/$$-kdump.conf
             ;;
         ssh|nfs)
             kdump_install_net "$_val"