diff --git a/spa/plugins/alsa/acp/channelmap.h b/spa/plugins/alsa/acp/channelmap.h
index bb8f3f5f3..72e59fdc6 100644
--- a/spa/plugins/alsa/acp/channelmap.h
+++ b/spa/plugins/alsa/acp/channelmap.h
@@ -27,7 +27,7 @@
 extern "C" {
 #endif
 
-#define PA_CHANNELS_MAX	64
+#define PA_CHANNELS_MAX	128
 
 #define PA_CHANNEL_MAP_SNPRINT_MAX (PA_CHANNELS_MAX * 32)