diff --git a/nixos/modules/services/misc/redmine.nix b/nixos/modules/services/misc/redmine.nix
index eb6575887d58..7c9483911f21 100644
--- a/nixos/modules/services/misc/redmine.nix
+++ b/nixos/modules/services/misc/redmine.nix
@@ -124,7 +124,7 @@ in {
 
     assertions = [
       { assertion = cfg.databasePassword != "";
-        message = "databasePassword must be set";
+        message = "services.redmine.databasePassword must be set";
       }
     ];