diff --git a/ffplayout/filters/default.py b/ffplayout/filters/default.py
index 7ddeb2a8..e5133d9b 100644
--- a/ffplayout/filters/default.py
+++ b/ffplayout/filters/default.py
@@ -160,7 +160,7 @@ def add_audio(probe, duration):
 
     if not probe.audio:
         messenger.warning(f'Clip "{probe.src}" has no audio!')
-        line = [(f'aevalsrc=0:channel_layout=2:duration={duration}:'
+        line = [(f'anullsrc:channel_layout=stereo:duration={duration}:'
                  f'sample_rate={48000}')]
 
     return line