diff --git a/src/modules/tm/t_msgbuilder.c b/src/modules/tm/t_msgbuilder.c
index 47f94c16975..ef9b45e2461 100644
--- a/src/modules/tm/t_msgbuilder.c
+++ b/src/modules/tm/t_msgbuilder.c
@@ -1358,6 +1358,7 @@ static inline int assemble_via(str* dest, struct cell* t,
 	unsigned int via_len;
 	str branch_str;
 	struct hostport hp;
+	str rport = str_init(";rport");
 
 	if (!t_calc_branch(t, branch, branch_buf, &len)) {
 		LM_ERR("branch calculation failed\n");
@@ -1372,7 +1373,11 @@ static inline int assemble_via(str* dest, struct cell* t,
 #endif
 
 	set_hostport(&hp, 0);
-	via = via_builder(&via_len, NULL, dst, &branch_str, 0, &hp);
+	if(ksr_local_rport) {
+		via = via_builder(&via_len, NULL, dst, &branch_str, &rport, &hp);
+	} else {
+		via = via_builder(&via_len, NULL, dst, &branch_str, 0, &hp);
+	}
 	if (!via) {
 		LM_ERR("via building failed\n");
 		return -2;