diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index 0a750ec5c4006b0bf70745d89e0ea3c9cff03c0d..9647a22ed69a84fa3068ebf89427dd3fac76c067 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -2311,7 +2311,7 @@ EXPORT_SYMBOL(snd_pcm_lib_readv);
 /* default channel maps for multi-channel playbacks, up to 8 channels */
 const struct snd_pcm_chmap_elem snd_pcm_std_chmaps[] = {
 	{ .channels = 1,
-	  .map = { SNDRV_CHMAP_FC } },
+	  .map = { SNDRV_CHMAP_UNKNOWN } },
 	{ .channels = 2,
 	  .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
 	{ .channels = 4,
@@ -2333,7 +2333,7 @@ EXPORT_SYMBOL_GPL(snd_pcm_std_chmaps);
 /* alternative channel maps with CLFE <-> surround swapped for 6/8 channels */
 const struct snd_pcm_chmap_elem snd_pcm_alt_chmaps[] = {
 	{ .channels = 1,
-	  .map = { SNDRV_CHMAP_FC } },
+	  .map = { SNDRV_CHMAP_UNKNOWN } },
 	{ .channels = 2,
 	  .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
 	{ .channels = 4,