diff --git a/mars_buf.c b/mars_buf.c
index f973f1db..074cfc5d 100644
--- a/mars_buf.c
+++ b/mars_buf.c
@@ -1117,13 +1117,13 @@ EXPORT_SYMBOL_GPL(buf_brick_type);
 
 int __init init_mars_buf(void)
 {
-	printk(MARS_INFO "init_buf()\n");
+	MARS_INF("init_buf()\n");
 	return buf_register_brick_type();
 }
 
 void __exit exit_mars_buf(void)
 {
-	printk(MARS_INFO "exit_buf()\n");
+	MARS_INF("exit_buf()\n");
 	buf_unregister_brick_type();
 }
 
diff --git a/mars_usebuf.c b/mars_usebuf.c
index edc1b811..4af3879b 100644
--- a/mars_usebuf.c
+++ b/mars_usebuf.c
@@ -364,13 +364,13 @@ EXPORT_SYMBOL_GPL(usebuf_brick_type);
 
 int __init init_mars_usebuf(void)
 {
-	printk(MARS_INFO "init_usebuf()\n");
+	MARS_INF("init_usebuf()\n");
 	return usebuf_register_brick_type();
 }
 
 void __exit exit_mars_usebuf(void)
 {
-	printk(MARS_INFO "exit_usebuf()\n");
+	MARS_INF("exit_usebuf()\n");
 	usebuf_unregister_brick_type();
 }