diff --git a/src/AppFrame.cpp b/src/AppFrame.cpp
index d9c4f20..5e296b4 100644
--- a/src/AppFrame.cpp
+++ b/src/AppFrame.cpp
@@ -516,7 +516,9 @@ void AppFrame::OnIdle(wxIdleEvent& event) {
             demodGainMeter->setLevel(demodGainMeter->getInputValue());
         }
 
-        if (wxGetApp().getFrequency() != demodWaterfallCanvas->getCenterFrequency()) {
+        if (wxGetApp().getFrequency() != waterfallCanvas->getCenterFrequency()) {
+            spectrumCanvas->setCenterFrequency(wxGetApp().getFrequency());
+            waterfallCanvas->setCenterFrequency(wxGetApp().getFrequency());
             demodWaterfallCanvas->setCenterFrequency(wxGetApp().getFrequency());
             demodSpectrumCanvas->setCenterFrequency(wxGetApp().getFrequency());
         }