diff --git a/modules/system/backups.nix b/modules/system/backups.nix
index 5d26965..551f0a3 100644
--- a/modules/system/backups.nix
+++ b/modules/system/backups.nix
@@ -59,7 +59,7 @@ in
             --stats \
             --show-rc \
             --compression lz4 \
-            "$BORG_REPO::${lib.toString config.networking.hostName}-$(date +'%Y-%m-%dT%H:%M:%S')" \
+            "$BORG_REPO::${config.networking.hostName}-$(date +'%Y-%m-%dT%H:%M:%S')" \
             ${lib.concatStringsSep " " cfg.paths}
 
           # Prune old backups according to retention policy