diff --git a/module.nix b/module.nix
index 3a71049..c651bee 100644
--- a/module.nix
+++ b/module.nix
@@ -52,7 +52,7 @@ in
 				default = "_env:YESOD_IP_FROM_HEADER:false";
 				type = types.str;
 			};
-			database = {
+			database = mkOption {
 				type = databaseOptionType;
 			};
 			copyright = mkOption {