diff --git a/content/projects/noxos/docs/codebase/mm/page_map.h.md b/content/projects/noxos/docs/codebase/mm/page_map.h.md
index e61f23c..0e8cced 100644
--- a/content/projects/noxos/docs/codebase/mm/page_map.h.md
+++ b/content/projects/noxos/docs/codebase/mm/page_map.h.md
@@ -62,6 +62,10 @@ It always applies the _Present_ flag automatically.
 Removes a page mapping from the **_page_map_**.
 Page map structure intern pages won't be checked if they're still needed or not.
 
+# `page_map_check_memory(page_map*, virtual_address)` - function (bool)
+Check if there is a page mapped at **_virtual_address_** in **_page_map_**.
+Returns _true_ if there is a page mapped and _false_ if not.
+
 # `page_map_get_physical_address(page_map*, virtual_address)` - function (void*)
 Returns the physical address of the page, that is mapped to **_virtual_address_**.