diff --git a/aegisub/docs/doxygen/doxyfile b/aegisub/docs/doxygen/doxyfile
index 6abf3aa7f..46a68fe23 100644
--- a/aegisub/docs/doxygen/doxyfile
+++ b/aegisub/docs/doxygen/doxyfile
@@ -230,7 +230,7 @@ PERL_PATH              = /usr/bin/perl
 CLASS_DIAGRAMS         = YES
 MSCGEN_PATH            = 
 HIDE_UNDOC_RELATIONS   = YES
-HAVE_DOT               = NO
+HAVE_DOT               = YES
 DOT_FONTNAME           = FreeSans
 DOT_FONTSIZE           = 10
 DOT_FONTPATH           =