diff --git a/pjsip/src/pjsip-ua/sip_inv.c b/pjsip/src/pjsip-ua/sip_inv.c
index 4813c3c..2f84859 100644
--- a/pjsip/src/pjsip-ua/sip_inv.c
+++ b/pjsip/src/pjsip-ua/sip_inv.c
@@ -3657,8 +3657,11 @@
 								    sdp);
 
 			/* Retrieve the "fixed" offer from negotiator */
-			if (status==PJ_SUCCESS)
-			    pjmedia_sdp_neg_get_neg_local(inv->neg, &sdp);
+			if (status==PJ_SUCCESS) {
+			    const pjmedia_sdp_session *lsdp = NULL;
+			    pjmedia_sdp_neg_get_neg_local(inv->neg, &lsdp);
+			    sdp = (pjmedia_sdp_session*)lsdp;
+			}
 		    }
 		}