diff --git a/doc/reference/kernel/timing/clocks.rst b/doc/reference/kernel/timing/clocks.rst
index 0fefbe66d81..e1697752a71 100644
--- a/doc/reference/kernel/timing/clocks.rst
+++ b/doc/reference/kernel/timing/clocks.rst
@@ -347,3 +347,9 @@ the time they passed the timeout to you.  Care must be taken to call
 this function just once, as synchronously as possible to the timeout
 creation in user code.  It should not be used on a "stored" timeout
 value, and should never be called iteratively in a loop.
+
+
+API Reference
+*************
+
+.. doxygengroup:: clock_apis
diff --git a/include/kernel.h b/include/kernel.h
index 2162df25b16..49a6727753a 100644
--- a/include/kernel.h
+++ b/include/kernel.h
@@ -1515,6 +1515,7 @@ static inline void *z_impl_k_timer_user_data_get(const struct k_timer *timer)
 
 /**
  * @addtogroup clock_apis
+ * @ingroup kernel_apis
  * @{
  */