diff --git a/itl/types.conf b/itl/types.conf
index aca76528d..c09b80cad 100644
--- a/itl/types.conf
+++ b/itl/types.conf
@@ -50,11 +50,22 @@ type Host {
 	dictionary hostchecks {
 		string *
 	},
+	dictionary services {
+		any * /* TODO: more specific validation rules */
+	},
+
+	/* service attributes */
+	number max_check_attempts,
+	number check_interval,
+	number retry_interval,
 	dictionary macros {
 		string *
 	},
-	dictionary services {
-		any * /* TODO: more specific validation rules */
+	dictionary servicegroups {
+		string *
+	},
+	dictionary checkers {
+		string *
 	}
 }