diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index a6da2d765c78..8d2a4f00eca9 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -644,8 +644,8 @@ static inline bool __rb_time_read(rb_time_t *t, u64 *ret, unsigned long *cnt)
 
 	*cnt = rb_time_cnt(top);
 
-	/* If top and bottom counts don't match, this interrupted a write */
-	if (*cnt != rb_time_cnt(bottom))
+	/* If top and msb counts don't match, this interrupted a write */
+	if (*cnt != rb_time_cnt(msb))
 		return false;
 
 	/* The shift to msb will lose its cnt bits */