diff --git a/app/qtapp/rtknavi_qt/mondlg.cpp b/app/qtapp/rtknavi_qt/mondlg.cpp
index b8829d02b..8b13ae9fc 100644
--- a/app/qtapp/rtknavi_qt/mondlg.cpp
+++ b/app/qtapp/rtknavi_qt/mondlg.cpp
@@ -2110,11 +2110,12 @@ void MonitorDialog::showRtcmSsr()
     time = rtksvr->rtk.sol.time;
     for (i = n = 0; i < MAXSAT; i++) {
         if (!(satsys(i + 1, NULL) & sys)) continue;
-        bool valid = rtksvr->rtcm[effectiveStream].ssr[i].t0[0].time &&
-            fabs(timediff(time, rtksvr->rtcm[effectiveStream].ssr[i].t0[0])) <= 1800.0 &&
-            rtksvr->rtcm[effectiveStream].ssr[i].iode >= 0;
+        if (inputStream == 3)
+          ssr[n] = rtksvr->nav.ssr[i];
+        else
+          ssr[n] = rtksvr->rtcm[effectiveStream].ssr[i];
+        bool valid = ssr[n].t0[0].time && fabs(timediff(time, ssr[n].t0[0])) <= 1800.0 && ssr[n].iode >= 0;
         if (ui->cBSelectSatellites->currentIndex() && !valid) continue;
-        ssr[n] = rtksvr->rtcm[effectiveStream].ssr[i];
         sat[n++] = i + 1;
     }
     rtksvrunlock(rtksvr);
diff --git a/app/winapp/rtknavi/mondlg.cpp b/app/winapp/rtknavi/mondlg.cpp
index 4f8626e06..673d993c8 100644
--- a/app/winapp/rtknavi/mondlg.cpp
+++ b/app/winapp/rtknavi/mondlg.cpp
@@ -1964,11 +1964,9 @@ void __fastcall TMonitorDialog::ShowRtcmSsr(void)
 	time=rtksvr.rtk.sol.time;
 	for (i=n=0;i<MAXSAT;i++) {
 		if (!(satsys(i+1,NULL)&sys)) continue;
-		int valid = rtksvr.rtcm[Str1].ssr[i].t0[0].time &&
-			fabs(timediff(time, rtksvr.rtcm[Str1].ssr[i].t0[0])) <= 1800.0 &&
-			rtksvr.rtcm[Str1].ssr[i].iode >= 0;
-		if (SelSat->ItemIndex == 1 && !valid) continue;
 		ssr[n]=rtksvr.rtcm[Str1].ssr[i];
+		int valid = ssr[n].t0[0].time && fabs(timediff(time, ssr[n].t0[0])) <= 1800.0 && ssr[n].iode >= 0;
+		if (SelSat->ItemIndex == 1 && !valid) continue;
 		sat[n++]=i+1;
 	}
 	rtksvrunlock(&rtksvr);