diff --git a/modules.d/99base/dracut-lib.sh b/modules.d/99base/dracut-lib.sh
index 2a5b536d..591b97c6 100755
--- a/modules.d/99base/dracut-lib.sh
+++ b/modules.d/99base/dracut-lib.sh
@@ -594,10 +594,10 @@ label_uuid_to_dev() {
             echo "/dev/disk/by-partlabel/$(echo "${_dev#PARTLABEL=}" | sed 's,/,\\x2f,g;s, ,\\x20,g')"
             ;;
         UUID=*)
-            echo "/dev/disk/by-uuid/$(echo "${_dev#UUID=}" | tr "[:upper:]" "[:lower:]")"
+            echo "/dev/disk/by-uuid/${_dev#UUID=}"
             ;;
         PARTUUID=*)
-            echo "/dev/disk/by-partuuid/$(echo "${_dev#PARTUUID=}" | tr "[:upper:]" "[:lower:]")"
+            echo "/dev/disk/by-partuuid/${_dev#PARTUUID=}"
             ;;
         *)
             echo "$_dev"