diff --git a/pages/2012-06-26-Recursive-Page-Directory.md b/pages/2012-06-26-Recursive-Page-Directory.md
index 1778cd0..33171f0 100644
--- a/pages/2012-06-26-Recursive-Page-Directory.md
+++ b/pages/2012-06-26-Recursive-Page-Directory.md
@@ -102,8 +102,9 @@ used to access the page directories and tables:
     //addr = virtual address
     //phys = physical address (page alligned)
     //flags = access flags
+    //ptab = physical address of space allocated for a page table (1 page)
 
-    page_dir[addr >> 22] = &page_tables[addr >> 12] | flags;
+    page_dir[addr >> 22] = ptab | flags;
     page_tables[addr >> 12] = phys | flags;
 
 ###Git