diff --git a/src/csl_dha.c b/src/csl_dha.c
index 3d7234a..d9bc328 100644
--- a/src/csl_dha.c
+++ b/src/csl_dha.c
@@ -24,6 +24,7 @@
 
 #include <osmocore/talloc.h>
 #include <osmocore/msgb.h>
+#include <osmocore/utils.h>
 
 #include <asn1c/OBJECT_IDENTIFIER.h>
 
@@ -43,6 +44,8 @@ static BIT_STRING_t dial_version1 = {
 	.bits_unused = 7,
 };
 
+static const uint8_t tcap_id_as_dialogue[] = { 0, 4, 0, 0, 1, 0, 1, 3 };
+
 /* Extract the Application Context Name and User Info from a DialoguePDU */
 static int extract_appctx_uinfo(OBJECT_IDENTIFIER_t **app_ctx_name, struct user_information **user_info,
 				struct DialoguePDU *dial_pdu)
@@ -150,6 +153,11 @@ int tcap_csl_tc_begin_req(struct tcap_dialogue *td, OBJECT_IDENTIFIER_t *app_ctx
 		dial = talloc_zero(ext, DialoguePDU_t);
 		dial->present = DialoguePDU_PR_dialogueRequest;
 
+		OBJECT_IDENTIFIER_set_arcs(&ext->oid,
+					   &tcap_id_as_dialogue,
+					   sizeof(tcap_id_as_dialogue[0]),
+					   ARRAY_SIZE(tcap_id_as_dialogue));
+
 		aarq = &dial->choice.dialogueRequest;
 		if (user_info)
 			aarq->user_information = user_info;
@@ -329,6 +337,12 @@ static ANY_t *gen_ext_AARE(struct tcap_dialogue *td, OBJECT_IDENTIFIER_t *app_ct
 	dial = talloc_zero(ext, DialoguePDU_t);
 
 	dial->present = DialoguePDU_PR_dialogueResponse;
+
+	OBJECT_IDENTIFIER_set_arcs(&ext->oid,
+				   &tcap_id_as_dialogue,
+				   sizeof(tcap_id_as_dialogue[0]),
+				   ARRAY_SIZE(tcap_id_as_dialogue));
+
 	aare = &dial->choice.dialogueResponse;
 	/* Set protocol version 1 */
 	aare->protocol_version = &dial_version1;