diff --git a/library/SIP_Emulation.ttcn b/library/SIP_Emulation.ttcn
index 57ec704..3957b8f 100644
--- a/library/SIP_Emulation.ttcn
+++ b/library/SIP_Emulation.ttcn
@@ -70,7 +70,7 @@
 	sipVersion := ?
 }
 
-template PDU_SIP_Request tr_SIP_INVITE := {
+private template PDU_SIP_Request tr_SIP_INVITE := {
 	requestLine := tr_ReqLine(INVITE_E),
 	msgHeader := t_SIP_msgHeader_any,
 	messageBody := *,