diff --git a/backup.nix b/backup.nix
index e56c9a2..bd5cc21 100644
--- a/backup.nix
+++ b/backup.nix
@@ -7,7 +7,6 @@ let
       pkgs.restic
     ];
     text = ''
-      # shellcheck disable=SC2031
       if [ -z "$BACKUP_HELPER_DIRS"  ]; then
         echo "BACKUP_HELPER_DIRS is not set"
         exit 1;
@@ -18,7 +17,7 @@ let
         output=$(restic backup "$i");
         if [ "$?" -ne 0 ]; then
           exit_code="$?";
-          echo "Backup of $i failed with exit code $rc:"
+          echo "Backup of $i failed with exit code $?:"
           echo "$output"
         else
           echo "Backup of $i successful:"