diff --git a/Doxyfile b/Doxyfile
index 5550d9e715c2d6b1dd75b181597492996e5e27d8..08e960e33fb1dc76f406f826b2a66fe0493e0f96 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -956,7 +956,7 @@ ENUM_VALUES_PER_LINE   = 4
 # JavaScript, DHTML, CSS and frames is required (i.e. any modern browser).
 # Windows users are probably better off using the HTML help feature.
 
-GENERATE_TREEVIEW      = NO
+GENERATE_TREEVIEW      = YES
 
 # By enabling USE_INLINE_TREES, doxygen will generate the Groups, Directories,
 # and Class Hierarchy pages using a tree view instead of an ordered list.