diff --git a/modules/backup.nix b/modules/backup.nix
index c53a8aa..8f7f957 100644
--- a/modules/backup.nix
+++ b/modules/backup.nix
@@ -25,7 +25,7 @@ let
         du -sh ${builtins.concatStringsSep " " (map (x: "--exclude=" + x) excludePaths)} ${builtins.concatStringsSep " " backupPathsFull}
         echo "Checking storage space (full) with excluded paths (remote)..."
         du -sh ${builtins.concatStringsSep " " (map (x: "--exclude=" + x) excludePathsRemote)} ${builtins.concatStringsSep " " backupPathsFull}
-      ''
+      '';
     };
 in
 {