diff --git a/nextcloud.nix b/nextcloud.nix
index da260ca..c82c36a 100644
--- a/nextcloud.nix
+++ b/nextcloud.nix
@@ -42,4 +42,12 @@
       port = 8081;
     }
   ];
+
+  # The cron timer can fire before nextcloud-setup.service has finished on
+  # first boot, causing a "Not installed" failure. Make the cron service wait
+  # for setup to complete before it's allowed to run.
+  systemd.services.nextcloud-cron = {
+    after = [ "nextcloud-setup.service" ];
+    requires = [ "nextcloud-setup.service" ];
+  };
 }