diff --git a/firmware/pcm_mixer.c b/firmware/pcm_mixer.c
index 3194f76e04..25c41c2586 100644
--- a/firmware/pcm_mixer.c
+++ b/firmware/pcm_mixer.c
@@ -70,11 +70,6 @@ static struct mixer_channel * active_channels[PCM_MIXER_NUM_CHANNELS+1] IBSS_ATT
 #define MAX_IDLE_FRAMES     (NATIVE_FREQUENCY*3 / MIX_FRAME_SAMPLES)
 static unsigned int idle_counter = 0;
 
-/* Cheapo buffer align macro to align to the 16-16 PCM size */
-#define ALIGN_CHANNEL(start, size) \
-    ({ start = (void *)(((uintptr_t)start + 3) & ~3); \
-       size &= ~3; })
-
 #if (CONFIG_PLATFORM & PLATFORM_NATIVE)
 
 /* Include any implemented CPU-optimized mixdown routines */