diff --git a/kernel/printk/printk_ringbuffer.c b/kernel/printk/printk_ringbuffer.c
index 24a960a89aa8..6b1525685277 100644
--- a/kernel/printk/printk_ringbuffer.c
+++ b/kernel/printk/printk_ringbuffer.c
@@ -345,7 +345,7 @@ DESC_ID((id) - DESCS_COUNT(desc_ring))
  */
 struct prb_data_block {
 	unsigned long	id;
-	char		data[0];
+	char		data[];
 };
 
 /*