diff --git a/src/modules/textopsx/README b/src/modules/textopsx/README
index 60b458d189c..f68ae5a9f2e 100644
--- a/src/modules/textopsx/README
+++ b/src/modules/textopsx/README
@@ -92,6 +92,10 @@ Chapter 1. Admin Guide
    routing block configurations. It adds new features similar to the
    textops module (textops eXtentions).
 
+   Note: If you add or remove message parts (header, body etc..) it may be
+   required to execute msg_apply_changes() from this module if there are
+   other operations done on the SIP message later on.
+
 2. Functions
 
    2.1. msg_apply_changes()