diff --git a/README.md b/README.md
index cf8e2618bbab3b48c0aa68b1d4c16d679bbf1cf8..54ea0384e91939806d8e54cd226dde97ab10ddf6 100644
--- a/README.md
+++ b/README.md
@@ -7,3 +7,5 @@ https://projects.eclipse.org/projects/tools.titan
 The source code of the TTCN-3 compiler and executor:
 
 https://github.com/eclipse/titan.core
+
+# Important: this is and HTTP 1.0/1.1. and not an HTTP/2 implementation; that is yet to come.