diff --git a/AABB_tree/doc/AABB_tree/aabb_tree.txt b/AABB_tree/doc/AABB_tree/aabb_tree.txt
index 7bb8e36d7dc..109d40cbc30 100644
--- a/AABB_tree/doc/AABB_tree/aabb_tree.txt
+++ b/AABB_tree/doc/AABB_tree/aabb_tree.txt
@@ -189,7 +189,7 @@ example illustrates this for two polyhedral surfaces.
 \subsection aabb_tree_examples_7 Trees of Custom Primitives
 
 The AABB tree example folder contains three examples of trees
-constructed with customize primitives. In \ref AABB_tree/AABB_custom_example.cpp "AABB_custom_example.cpp"
+constructed with custom primitives. In \ref AABB_tree/AABB_custom_example.cpp "AABB_custom_example.cpp"
 the primitive contains triangles which are defined by three pointers
 to custom points. In \ref AABB_tree/AABB_custom_triangle_soup_example.cpp "AABB_custom_triangle_soup_example.cpp" all input
 triangles are stored into a single array so as to form a triangle