diff --git a/tools/quake3/q3map2/q3map2.h b/tools/quake3/q3map2/q3map2.h
index 1bf102f..0e95aa5 100644
--- a/tools/quake3/q3map2/q3map2.h
+++ b/tools/quake3/q3map2/q3map2.h
@@ -79,6 +79,8 @@ dependencies
 #include "inout.h"
 #include "vfs.h"
 #include "png.h"
+
+/* mhash library must be installed locally or system wide - http://mhash.sourceforge.net/ */
 #include "mhash.h"
 
 #include <stdlib.h>