diff --git a/include/pcm.h b/include/pcm.h
index 2c7dce9b..f3618c3d 100644
--- a/include/pcm.h
+++ b/include/pcm.h
@@ -1020,7 +1020,8 @@ snd_pcm_uframes_t snd_pcm_meter_get_boundary(snd_pcm_t *pcm);
 int snd_pcm_meter_add_scope(snd_pcm_t *pcm, snd_pcm_scope_t *scope);
 snd_pcm_scope_t *snd_pcm_meter_search_scope(snd_pcm_t *pcm, const char *name);
 int snd_pcm_scope_malloc(snd_pcm_scope_t **ptr);
-void snd_pcm_scope_set_ops(snd_pcm_scope_t *scope, snd_pcm_scope_ops_t *val);
+void snd_pcm_scope_set_ops(snd_pcm_scope_t *scope,
+			   const snd_pcm_scope_ops_t *val);
 void snd_pcm_scope_set_name(snd_pcm_scope_t *scope, const char *val);
 const char *snd_pcm_scope_get_name(snd_pcm_scope_t *scope);
 void *snd_pcm_scope_get_callback_private(snd_pcm_scope_t *scope);
diff --git a/src/pcm/pcm_meter.c b/src/pcm/pcm_meter.c
index 0357921b..5acc7bc8 100644
--- a/src/pcm/pcm_meter.c
+++ b/src/pcm/pcm_meter.c
@@ -46,7 +46,7 @@ const char *_snd_module_pcm_meter = "";
 struct _snd_pcm_scope {
 	int enabled;
 	char *name;
-	snd_pcm_scope_ops_t *ops;
+	const snd_pcm_scope_ops_t *ops;
 	void *private_data;
 	struct list_head list;
 };
@@ -960,7 +960,7 @@ const char *snd_pcm_scope_get_name(snd_pcm_scope_t *scope)
  * \param scope PCM meter scope
  * \param val callbacks
  */
-void snd_pcm_scope_set_ops(snd_pcm_scope_t *scope, snd_pcm_scope_ops_t *val)
+void snd_pcm_scope_set_ops(snd_pcm_scope_t *scope, const snd_pcm_scope_ops_t *val)
 {
 	scope->ops = val;
 }