diff --git a/features/server/backups.nix b/features/server/backups.nix
index 70d8472..d6e0ba0 100644
--- a/features/server/backups.nix
+++ b/features/server/backups.nix
@@ -77,7 +77,7 @@
 
   systemd.timers."borgmatic" = {
     enable = true;
-    unit = "borgmatic.service";
+    Unit = "borgmatic.service";
     wantedBy = [ "timers.target" ];
     timerConfig = {
       OnCalendar = "*-*-* 03:00:00";