diff --git a/cluster/services/storage/garage.nix b/cluster/services/storage/garage.nix
index a8f1cbf..8997613 100644
--- a/cluster/services/storage/garage.nix
+++ b/cluster/services/storage/garage.nix
@@ -30,7 +30,7 @@ in
     enable = true;
     package = depot.packages.garage;
     settings = {
-      replication_mode = 3;
+      replication_mode = "3";
       block_size = 16 * 1024 * 1024;
       db_engine = "lmdb";
       metadata_dir = "/var/lib/garage-metadata";