diff --git a/os/rt/dox/rt.dox b/os/rt/dox/rt.dox
index 0972a1dd5..4624f5bfb 100644
--- a/os/rt/dox/rt.dox
+++ b/os/rt/dox/rt.dox
@@ -33,6 +33,11 @@
  * @ingroup kernel
  */
 
+/**
+ * @defgroup checks License Checks
+ * @ingroup kernel
+ */
+
 /**
  * @defgroup base Base Kernel Services
  * @details Base kernel services, the base subsystems are always included in