diff --git a/spa/include/spa/param/audio/raw.h b/spa/include/spa/param/audio/raw.h
index 2fd7fcfe3..804e5df1d 100644
--- a/spa/include/spa/param/audio/raw.h
+++ b/spa/include/spa/param/audio/raw.h
@@ -18,7 +18,7 @@ extern "C" {
  * \{
  */
 
-#define SPA_AUDIO_MAX_CHANNELS	128u
+#define SPA_AUDIO_MAX_CHANNELS	64u
 
 enum spa_audio_format {
 	SPA_AUDIO_FORMAT_UNKNOWN,