diff --git a/Orthtree/doc/Orthtree/dependencies b/Orthtree/doc/Orthtree/dependencies
index 1e72914f700..703f46d8926 100644
--- a/Orthtree/doc/Orthtree/dependencies
+++ b/Orthtree/doc/Orthtree/dependencies
@@ -8,3 +8,4 @@ Property_map
 STL_Extension
 Spatial_searching
 Stream_support
+Surface_mesh