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-rw-r--r--nixos/modules/services/backup/restic.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/nixos/modules/services/backup/restic.nix b/nixos/modules/services/backup/restic.nix
index e1dccbba763..2388f1d6ca1 100644
--- a/nixos/modules/services/backup/restic.nix
+++ b/nixos/modules/services/backup/restic.nix
@@ -166,7 +166,7 @@ in
           backupPaths = if (backup.dynamicFilesFrom == null)
                         then concatStringsSep " " backup.paths
                         else "--files-from ${filesFromTmpFile}";
-          pruneCmd = optional (builtins.length backup.pruneOpts > 0) [
+          pruneCmd = optionals (builtins.length backup.pruneOpts > 0) [
             ( resticCmd + " forget --prune " + (concatStringsSep " " backup.pruneOpts) )
             ( resticCmd + " check" )
           ];