diff --git a/cpp/Doxyfile b/cpp/Doxyfile
index c1d20b1f8..97b4f769d 100644
--- a/cpp/Doxyfile
+++ b/cpp/Doxyfile
@@ -1251,7 +1251,7 @@ HIDE_UNDOC_RELATIONS = YES
 # toolkit from AT&T and Lucent Bell Labs. The other options in this section 
 # have no effect if this option is set to NO (the default)
 
-HAVE_DOT = NO
+HAVE_DOT = YES
 
 # By default doxygen will write a font called FreeSans.ttf to the output 
 # directory and reference it in all dot files that doxygen generates. This