diff --git a/sound/core/sound_kunit.c b/sound/core/sound_kunit.c
index eb90f62228c0..e34c4317f5eb 100644
--- a/sound/core/sound_kunit.c
+++ b/sound/core/sound_kunit.c
@@ -167,7 +167,7 @@ static void _test_fill_silence(struct kunit *test, struct snd_format_test_data *
 
 static void test_format_fill_silence(struct kunit *test)
 {
-	u32 buf_samples[] = { 10, 20, 32, 64, 129, SILENCE_BUFFER_MAX_FRAMES };
+	static const u32 buf_samples[] = { 10, 20, 32, 64, 129, SILENCE_BUFFER_MAX_FRAMES };
 	u8 *buffer;
 	u32 i, j;