diff --git a/duplicity-backup.sh b/duplicity-backup.sh
index 3c69e83..f44a6d6 100755
--- a/duplicity-backup.sh
+++ b/duplicity-backup.sh
@@ -660,7 +660,7 @@ get_remote_file_size()
     ;;
     "fi")
       FRIENDLY_TYPE_NAME="File"
-      TMPDEST=$(echo "${DEST}" | cut -c 6-)
+      TMPDEST="${DEST#file://*}"
       SIZE=$(du -hs "${TMPDEST}" | awk '{print $1}')
     ;;
     "gs")