diff --git a/include/ircd/ios.h b/include/ircd/ios.h
index 5f490b732..de6842af8 100644
--- a/include/ircd/ios.h
+++ b/include/ircd/ios.h
@@ -150,11 +150,11 @@ struct ircd::ios::handler
 	static thread_local handler *current;
 
 	static void *allocate(handler *const &, const size_t &);
-	static void deallocate(handler *const &, void *const &, const size_t &);
-	static bool continuation(handler *const &);
-	static void enter(handler *const &);
-	static void leave(handler *const &);
-	static bool fault(handler *const &);
+	static void deallocate(handler *const &, void *const &, const size_t &) noexcept;
+	static bool continuation(handler *const &) noexcept;
+	static void enter(handler *const &) noexcept;
+	static void leave(handler *const &) noexcept;
+	static bool fault(handler *const &) noexcept;
 
 	ios::descriptor *descriptor {nullptr};
 	uint64_t slice_start {0};
diff --git a/ircd/ios.cc b/ircd/ios.cc
index 137017013..93882f36d 100644
--- a/ircd/ios.cc
+++ b/ircd/ios.cc
@@ -158,6 +158,7 @@ ircd::ios::handler::current;
 
 bool
 ircd::ios::handler::fault(handler *const &handler)
+noexcept
 {
 	assert(handler && handler->descriptor);
 	auto &descriptor(*handler->descriptor);
@@ -183,6 +184,7 @@ ircd::ios::handler::fault(handler *const &handler)
 
 void
 ircd::ios::handler::leave(handler *const &handler)
+noexcept
 {
 	assert(handler && handler->descriptor);
 	auto &descriptor(*handler->descriptor);
@@ -198,6 +200,7 @@ ircd::ios::handler::leave(handler *const &handler)
 
 void
 ircd::ios::handler::enter(handler *const &handler)
+noexcept
 {
 	assert(handler && handler->descriptor);
 	auto &descriptor(*handler->descriptor);
@@ -213,6 +216,7 @@ ircd::ios::handler::enter(handler *const &handler)
 
 bool
 ircd::ios::handler::continuation(handler *const &handler)
+noexcept
 {
 	assert(handler && handler->descriptor);
 	auto &descriptor(*handler->descriptor);
@@ -223,6 +227,7 @@ void
 ircd::ios::handler::deallocate(handler *const &handler,
                                void *const &ptr,
                                const size_t &size)
+noexcept
 {
 	assert(handler && handler->descriptor);
 	auto &descriptor(*handler->descriptor);