diff --git a/src/pcm/pcm_route.c b/src/pcm/pcm_route.c
index 2f0be38b..72c198cb 100644
--- a/src/pcm/pcm_route.c
+++ b/src/pcm/pcm_route.c
@@ -644,8 +644,10 @@ static int snd_pcm_route_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t * params)
 	}
 	if (err < 0)
 		return err;
-	route->params.use_getput = snd_pcm_format_physical_width(src_format) == 24 ||
-		snd_pcm_format_physical_width(dst_format) == 24;
+	/* 3 bytes formats? */
+	route->params.use_getput =
+		(snd_pcm_format_physical_width(src_format) + 7) / 3 == 3 ||
+		(snd_pcm_format_physical_width(dst_format) + 7) / 3 == 3;
 	route->params.get_idx = snd_pcm_linear_get_index(src_format, SND_PCM_FORMAT_S16);
 	route->params.put_idx = snd_pcm_linear_put32_index(SND_PCM_FORMAT_S32, dst_format);
 	route->params.conv_idx = snd_pcm_linear_convert_index(src_format, dst_format);