diff --git a/include/types/ring.h b/include/types/ring.h
index 3d69b22..86c507f 100644
--- a/include/types/ring.h
+++ b/include/types/ring.h
@@ -96,6 +96,7 @@
 struct ring {
 	struct buffer buf;   // storage area
 	size_t ofs;          // absolute offset in history of the buffer's head
+	struct list waiters; // list of waiters, for now, CLI "show event"
 	__decl_hathreads(HA_RWLOCK_T lock);
 	int readers_count;
 };