diff --git a/owrx/dsp.py b/owrx/dsp.py
index 2bf38992..ef55a453 100644
--- a/owrx/dsp.py
+++ b/owrx/dsp.py
@@ -256,6 +256,8 @@ class ClientDemodulatorChain(Chain):
         if isinstance(self.demodulator, DialFrequencyReceiver):
             self.demodulator.setDialFrequency(dialFrequency)
         if isinstance(self.secondaryDemodulator, DialFrequencyReceiver):
+            if self.secondaryFrequencyOffset:
+                dialFrequency += self.secondaryFrequencyOffset
             self.secondaryDemodulator.setDialFrequency(dialFrequency)
 
     def setAudioCompression(self, compression: str) -> None: