diff --git a/app.go b/app.go
index 91fdde4..5afe819 100644
--- a/app.go
+++ b/app.go
@@ -166,7 +166,7 @@ func (a *App) updateTracking() {
 
 	// Doppler: only when globally enabled AND tracking enabled for this sat AND el >= 0
 	if a.activeRadio().IsConnected() && pos.Elevation >= 0 && a.dopplerEnabled && a.trackFreqMode {
-		upFreq, downFreq := a.dopplerCalc.Correct(pos, obs, now)
+		downFreq, upFreq := a.dopplerCalc.Correct(pos, obs, now)
 		if err := a.activeRadio().SetFrequency(downFreq, upFreq); err != nil {
 			log.Printf("[Doppler] SetFrequency error: %v", err)
 		}
diff --git a/build/bin/SatMaster.exe b/build/bin/SatMaster.exe
index 16850f0..e9abdb5 100644
Binary files a/build/bin/SatMaster.exe and b/build/bin/SatMaster.exe differ
diff --git a/frontend/src/lib/satdb.js b/frontend/src/lib/satdb.js
index bbdf2ae..f9be3f9 100644
--- a/frontend/src/lib/satdb.js
+++ b/frontend/src/lib/satdb.js
@@ -61,7 +61,7 @@ const DB = [
     displayName: 'ISS',
     type: SAT_TYPE.FM,
     freqs: [
-      { downHz: 437800000, upHz: 149990000, mode: 'FM',   notes: 'FM Voice répéteur, CTCSS 67.0 Hz. Active sometimes.' },
+      { downHz: 437800000, upHz: 145990000, mode: 'FM',   notes: 'FM Voice répéteur, CTCSS 67.0 Hz. Active sometimes.' },
       { downHz: 144825000, upHz: 0,         mode: 'APRS', notes: 'APRS Europe 144.825 MHz / 1200bps AFSK' },
     ]
   },