diff --git a/src/pcm/pcm_plug.c b/src/pcm/pcm_plug.c
index f1d7792d..abf6f1ab 100644
--- a/src/pcm/pcm_plug.c
+++ b/src/pcm/pcm_plug.c
@@ -138,6 +138,17 @@ static const snd_pcm_format_t linear_preferred_formats[] = {
 	SND_PCM_FORMAT_S24_LE,
 	SND_PCM_FORMAT_U24_LE,
 #endif
+#ifdef SND_LITTLE_ENDIAN
+	SND_PCM_FORMAT_S20_LE,
+	SND_PCM_FORMAT_U20_LE,
+	SND_PCM_FORMAT_S20_BE,
+	SND_PCM_FORMAT_U20_BE,
+#else
+	SND_PCM_FORMAT_S20_BE,
+	SND_PCM_FORMAT_U20_BE,
+	SND_PCM_FORMAT_S20_LE,
+	SND_PCM_FORMAT_U20_LE,
+#endif
 #ifdef SND_LITTLE_ENDIAN
 	SND_PCM_FORMAT_S24_3LE,
 	SND_PCM_FORMAT_U24_3LE,