diff --git a/pjsip/src/pjsua-lib/pjsua_call.c b/pjsip/src/pjsua-lib/pjsua_call.c
index 0a78d0f963..d0489cc908 100644
--- a/pjsip/src/pjsua-lib/pjsua_call.c
+++ b/pjsip/src/pjsua-lib/pjsua_call.c
@@ -2744,8 +2744,8 @@ PJ_DEF(pj_status_t) pjsua_call_answer2(pjsua_call_id call_id,
     if (status != PJ_SUCCESS)
         goto on_return;
 
-    if (call->inv->role == PJSIP_ROLE_UAC ||
-        !call->inv->invite_tsx ||
+    if (!call->inv->invite_tsx ||
+        call->inv->invite_tsx->role != PJSIP_ROLE_UAC ||
         call->inv->invite_tsx->state >= PJSIP_TSX_STATE_COMPLETED)
     {
         PJ_LOG(3,(THIS_FILE, "Unable to answer call (no incoming INVITE or "