diff --git a/README.adoc b/README.adoc
index 4e8d8b9..32cf63c 100644
--- a/README.adoc
+++ b/README.adoc
@@ -3856,6 +3856,8 @@ Makefile:79: recipe for target '_all' failed
 make: *** [_all] Error 2
 ....
 
+Tested on: 07b9ae39d7ae863ff2a9f5a8183d60cb6ce37d46
+
 TODO: minimize on master and bug report.
 
 On Ubuntu 18.04 with NVIDIA proprietary drivers: