diff --git a/scripts/transcoder/00-live.liq b/scripts/transcoder/00-live.liq
index 94cd284..644b2ff 100755
--- a/scripts/transcoder/00-live.liq
+++ b/scripts/transcoder/00-live.liq
@@ -49,13 +49,7 @@ live =
   )
 
 def mk_fallback_source(result, s) =
-  if
-    s.is_autofallback
-  then
-    [...result, (s.source : formats.pcm)]
-  else
-    result
-  end
+  if s.is_autofallback then [...result, s.source] else result end
 end
 
 radio_prod =
@@ -63,10 +57,10 @@ radio_prod =
     id="fallback_prod",
     track_sensitive=false,
     [
-      (live : formats.pcm),
+      live,
       ...list.fold(mk_fallback_source, [], input_sources),
 
-      (safe_blank : formats.pcm)
+      safe_blank
     ]
   )
 
diff --git a/scripts/transcoder/30-formats.liq b/scripts/transcoder/30-formats.liq
index b8e1a2d..013a0c0 100644
--- a/scripts/transcoder/30-formats.liq
+++ b/scripts/transcoder/30-formats.liq
@@ -1,8 +1,4 @@
-let formats =
-  {
-    surround={icecast=(), hls=(), pcm=source(audio=pcm)},
-    stereo={icecast=(), hls=(), pcm=source(audio=pcm(5.1))}
-  }
+let formats = {surround={icecast=(), hls=()}, stereo={icecast=(), hls=()}}
 
 %include "formats/hls.aac.liq"
 %include "formats/hls.libfdk_aac.liq"