diff --git a/sound/isa/msnd/msnd.c b/sound/isa/msnd/msnd.c
index 8109ab3d29d1..ae9562cffbf9 100644
--- a/sound/isa/msnd/msnd.c
+++ b/sound/isa/msnd/msnd.c
@@ -572,7 +572,7 @@ snd_msnd_playback_pointer(struct snd_pcm_substream *substream)
 }
 
 
-static struct snd_pcm_ops snd_msnd_playback_ops = {
+static const struct snd_pcm_ops snd_msnd_playback_ops = {
 	.open =		snd_msnd_playback_open,
 	.close =	snd_msnd_playback_close,
 	.ioctl =	snd_pcm_lib_ioctl,
@@ -669,7 +669,7 @@ static int snd_msnd_capture_hw_params(struct snd_pcm_substream *substream,
 }
 
 
-static struct snd_pcm_ops snd_msnd_capture_ops = {
+static const struct snd_pcm_ops snd_msnd_capture_ops = {
 	.open =		snd_msnd_capture_open,
 	.close =	snd_msnd_capture_close,
 	.ioctl =	snd_pcm_lib_ioctl,