diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 7b0deb984e..5c15180f11 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -20227,8 +20227,9 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
 		}
 
 		/* If T38 is needed but not present, then make it magically appear */
-		if (ast_test_flag(&p->flags[1], SIP_PAGE2_T38SUPPORT) && !p->udptl) {
-			p->udptl = ast_udptl_new_with_bindaddr(sched, io, 0, bindaddr.sin_addr);
+		if (ast_test_flag(&p->flags[1], SIP_PAGE2_T38SUPPORT) && !p->udptl && (p->udptl = ast_udptl_new_with_bindaddr(sched, io, 0, bindaddr.sin_addr))) {
+			set_t38_capabilities(p);
+			p->t38.jointcapability = p->t38.capability;
 		}
 
 		/* We have a succesful authentication, process the SDP portion if there is one */