diff --git a/include/ircd/m/event/event.h b/include/ircd/m/event/event.h
index ebfb55655..c0fc1972f 100644
--- a/include/ircd/m/event/event.h
+++ b/include/ircd/m/event/event.h
@@ -51,6 +51,7 @@ struct ircd::m::event
 	using keys = json::keys<event>;
 	using id = m::id::event;
 	using idx = uint64_t;
+	using idx_range = std::pair<idx, idx>;
 	using closure = std::function<void (const event &)>;
 	using closure_bool = std::function<bool (const event &)>;
 	using closure_idx = std::function<void (const idx &)>;
diff --git a/include/ircd/m/events.h b/include/ircd/m/events.h
index 1c59e193d..427671222 100644
--- a/include/ircd/m/events.h
+++ b/include/ircd/m/events.h
@@ -26,14 +26,14 @@ namespace ircd::m::events
 /// (event::idx of 0 is a sentinel)
 ///
 struct ircd::m::events::range
-:std::pair<event::idx, event::idx>
+:event::idx_range
 {
 	const event::fetch::opts *fopts {nullptr};
 
 	range(const event::idx &start,
 	      const event::idx &stop = -1,
 	      const event::fetch::opts *const &fopts = nullptr)
-	:std::pair<event::idx, event::idx>{start, stop}
+	:event::idx_range{start, stop}
 	,fopts{fopts}
 	{}
 };