diff --git a/freedata_server/demodulator.py b/freedata_server/demodulator.py
index c13e2c2b..581b582c 100644
--- a/freedata_server/demodulator.py
+++ b/freedata_server/demodulator.py
@@ -86,8 +86,8 @@ class Demodulator():
         codec2.api.freedv_set_frames_per_burst(c2instance, 1)
 
         # init audio buffer
-        audio_buffer = codec2.audio_buffer(2 * self.AUDIO_FRAMES_PER_BUFFER_RX)
-        #audio_buffer = CircularBuffer(2 * self.AUDIO_FRAMES_PER_BUFFER_RX)
+        #audio_buffer = codec2.audio_buffer(2 * self.AUDIO_FRAMES_PER_BUFFER_RX)
+        audio_buffer = CircularBuffer(2 * self.AUDIO_FRAMES_PER_BUFFER_RX)