diff --git a/modem/demodulator.py b/modem/demodulator.py
index 7a65342e..e3ec3620 100644
--- a/modem/demodulator.py
+++ b/modem/demodulator.py
@@ -387,6 +387,9 @@ class Demodulator():
         for m in self.MODE_DICT:
             self.MODE_DICT[m]["decode"] = False
 
+        # signalling is always true
+        self.MODE_DICT[codec2.FREEDV_MODE.signalling.value]["decode"] = True
+
         # Enable specified modes
         for mode, decode in modes_to_decode.items():
             if mode in self.MODE_DICT: