diff --git a/techpack/audio/asoc/codecs/swr-dmic.c b/techpack/audio/asoc/codecs/swr-dmic.c
index 94bbede34662..fecbdb3e49cb 100644
--- a/techpack/audio/asoc/codecs/swr-dmic.c
+++ b/techpack/audio/asoc/codecs/swr-dmic.c
@@ -681,8 +681,7 @@ static int swr_dmic_probe(struct swr_device *pdev)
 		ret = -ENOMEM;
 		goto dev_err;
 	}
-	strlcpy(prefix_name, swr_dmic_name_prefix_of,
-			strlen(swr_dmic_name_prefix_of) + 1);
+	strlcpy(prefix_name, swr_dmic_name_prefix_of, sizeof(prefix_name));
 	component->name_prefix = prefix_name;
 
 	return 0;