diff --git a/src/external/readme.txt b/src/external/readme.txt
index 5b5ae0262..db65d9a0d 100644
--- a/src/external/readme.txt
+++ b/src/external/readme.txt
@@ -20,14 +20,7 @@ Modifications:
 ---- ode-0.11.1
 put there the direct unzip of the ode-0.11.1.zip file 
 https://sourceforge.net/projects/opende/files/ODE/0.11.1/ode-0.11.1.zip/download
-compilation info:
-
-for mac:
-./configure --with-drawstuff=X11
-make
-cp ode/src/.libs/libode.a ../lib/macx/
-
-
+compilation info in the folder.
 
 ---- qhull-2003.1
 Direct expansion of qhull-2003.1.tar.gz.