diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index 9647a22ed69a84fa3068ebf89427dd3fac76c067..f42c10a43315afdbe3761e6ef86d4fe220387124 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_UNKNOWN } },
+	  .map = { SNDRV_CHMAP_MONO } },
 	{ .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_UNKNOWN } },
+	  .map = { SNDRV_CHMAP_MONO } },
 	{ .channels = 2,
 	  .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
 	{ .channels = 4,
diff --git a/sound/pci/ens1370.c b/sound/pci/ens1370.c
index 9d432359d1cb822927c964280f2bcd2cdd933f94..5674cc316530bc3ab0a1b009e7d51b22ff0e3c1f 100644
--- a/sound/pci/ens1370.c
+++ b/sound/pci/ens1370.c
@@ -1262,7 +1262,7 @@ static struct snd_pcm_ops snd_ensoniq_capture_ops = {
 
 static const struct snd_pcm_chmap_elem surround_map[] = {
 	{ .channels = 1,
-	  .map = { SNDRV_CHMAP_UNKNOWN } },
+	  .map = { SNDRV_CHMAP_MONO } },
 	{ .channels = 2,
 	  .map = { SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
 	{ }
diff --git a/sound/pci/ymfpci/ymfpci_main.c b/sound/pci/ymfpci/ymfpci_main.c
index 50b0804df904b28fe82928370ce0e445b034cfaf..3a6f03f9b02f6bf9645dd3f473396881e3fed1ad 100644
--- a/sound/pci/ymfpci/ymfpci_main.c
+++ b/sound/pci/ymfpci/ymfpci_main.c
@@ -1264,7 +1264,7 @@ static struct snd_pcm_ops snd_ymfpci_playback_4ch_ops = {
 
 static const struct snd_pcm_chmap_elem surround_map[] = {
 	{ .channels = 1,
-	  .map = { SNDRV_CHMAP_UNKNOWN } },
+	  .map = { SNDRV_CHMAP_MONO } },
 	{ .channels = 2,
 	  .map = { SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
 	{ }