diff --git a/include/ircd/m/event/refs.h b/include/ircd/m/event/refs.h
index 8ff50ac5d..5a9ed0ca9 100644
--- a/include/ircd/m/event/refs.h
+++ b/include/ircd/m/event/refs.h
@@ -29,10 +29,10 @@ struct ircd::m::event::refs
 	event::idx idx;
 
   public:
-	using closure_bool = std::function<bool (const event::idx &, const dbs::ref &)>;
+	using closure = std::function<bool (const event::idx &, const dbs::ref &)>;
 
-	bool for_each(const dbs::ref &type, const closure_bool &) const;
-	bool for_each(const closure_bool &) const;
+	bool for_each(const dbs::ref &type, const closure &) const;
+	bool for_each(const closure &) const;
 
 	bool has(const dbs::ref &type, const event::idx &) const;
 	bool has(const dbs::ref &type) const;
diff --git a/matrix/event_refs.cc b/matrix/event_refs.cc
index 5b4a0f44c..d18f1437b 100644
--- a/matrix/event_refs.cc
+++ b/matrix/event_refs.cc
@@ -174,7 +174,7 @@ const
 }
 
 bool
-ircd::m::event::refs::for_each(const closure_bool &closure)
+ircd::m::event::refs::for_each(const closure &closure)
 const
 {
 	return for_each(dbs::ref(-1), closure);
@@ -182,7 +182,7 @@ const
 
 bool
 ircd::m::event::refs::for_each(const dbs::ref &type,
-                               const closure_bool &closure)
+                               const closure &closure)
 const
 {
 	if(!idx)