diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 8b04d093263f6299a474b5b1371f65dcebfe1ab6..4386683f9c609948f825e6b2f7afdccd814ca3f0 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -474,7 +474,7 @@ static struct latched_seq clear_seq = {
 /* record buffer */
 #define LOG_ALIGN __alignof__(unsigned long)
 #define __LOG_BUF_LEN (1 << CONFIG_LOG_BUF_SHIFT)
-#define LOG_BUF_LEN_MAX (u32)(1 << 31)
+#define LOG_BUF_LEN_MAX ((u32)1 << 31)
 static char __log_buf[__LOG_BUF_LEN] __aligned(LOG_ALIGN);
 static char *log_buf = __log_buf;
 static u32 log_buf_len = __LOG_BUF_LEN;