diff --git a/src/audio/mixin_mixout/mixin_mixout.c b/src/audio/mixin_mixout/mixin_mixout.c
index 35871afb4..931b5d143 100644
--- a/src/audio/mixin_mixout/mixin_mixout.c
+++ b/src/audio/mixin_mixout/mixin_mixout.c
@@ -699,7 +699,7 @@ static int mixin_prepare(struct processing_module *mod)
 
 	sink = list_first_item(&dev->bsink_list, struct comp_buffer, source_list);
 	sink_c = buffer_acquire(sink);
-	fmt = sink_c->stream.valid_sample_fmt;
+	fmt = audio_stream_get_valid_fmt(&sink_c->stream);
 	buffer_release(sink_c);
 
 	/* currently inactive so setup mixer */
diff --git a/src/audio/module_adapter/module/volume/volume.c b/src/audio/module_adapter/module/volume/volume.c
index aa122aaff..b47ae7799 100644
--- a/src/audio/module_adapter/module/volume/volume.c
+++ b/src/audio/module_adapter/module/volume/volume.c
@@ -1190,7 +1190,7 @@ static vol_zc_func vol_get_zc_function(struct comp_dev *dev,
 
 	/* map the zc function to frame format */
 	for (i = 0; i < ARRAY_SIZE(zc_func_map); i++) {
-		if (sinkb->stream.valid_sample_fmt == zc_func_map[i].frame_fmt)
+		if (audio_stream_get_valid_fmt(&sinkb->stream) == zc_func_map[i].frame_fmt)
 			return zc_func_map[i].func;
 	}
 
diff --git a/src/include/sof/audio/audio_stream.h b/src/include/sof/audio/audio_stream.h
index 049825e47..390f97186 100644
--- a/src/include/sof/audio/audio_stream.h
+++ b/src/include/sof/audio/audio_stream.h
@@ -118,6 +118,12 @@ static inline enum sof_ipc_frame audio_stream_get_frm_fmt(
 	return buf->frame_fmt;
 }
 
+static inline enum sof_ipc_frame audio_stream_get_valid_fmt(
+	const struct audio_stream __sparse_cache *buf)
+{
+	return buf->valid_sample_fmt;
+}
+
 /**
  * Retrieves readable address of a sample at specified index (see versions of
  * this macro specialized for various sample types).