diff --git a/dracut-functions.sh b/dracut-functions.sh
index b07063fd..92868282 100755
--- a/dracut-functions.sh
+++ b/dracut-functions.sh
@@ -388,7 +388,7 @@ get_persistent_dev() {
             return
         fi
     done
-    echo $1
+    printf -- "%s" "$1"
 }
 
 expand_persistent_dev() {