diff --git a/clients/opal/README.md b/clients/opal/README.md
index a4e43ebfd..5dd93b406 100644
--- a/clients/opal/README.md
+++ b/clients/opal/README.md
@@ -34,6 +34,9 @@ In RT-Lab under Files tab, we should see the files listed above for .llm file
 Development tab -> Compiler -> Compiler Command (makefile) add the following command
 /usr/bin/make -f /usr/opalrt/common/bin/opalmodelmk
 
+--------------------------------------------------
+Note that the name of the asynchronous process has changed as of May 2016. The name of the executable was ‚AsyncIP‘ and now is ‚s2ss‘. You have to change that in the AsyncCtrl block.
+
 --------------------------------------------------
 
 max umber of values in UDP packets: