diff --git a/pjsip-apps/src/samples/siprtp_report.c b/pjsip-apps/src/samples/siprtp_report.c
index dfb2830..192f223 100644
--- a/pjsip-apps/src/samples/siprtp_report.c
+++ b/pjsip-apps/src/samples/siprtp_report.c
@@ -59,7 +59,7 @@
     pj_gettimeofday(&now);
 
     /* Print duration */
-    if (inv->state >= PJSIP_INV_STATE_CONFIRMED && call->connect_time) {
+    if (inv->state >= PJSIP_INV_STATE_CONFIRMED && call->connect_time.sec) {
 
 	PJ_TIME_VAL_SUB(now, call->connect_time);