diff --git a/include/ircd/asio.h b/include/ircd/asio.h
index e5c428e2b..61e806022 100644
--- a/include/ircd/asio.h
+++ b/include/ircd/asio.h
@@ -43,16 +43,6 @@
 #include <boost/asio/spawn.hpp>
 #include <boost/asio/io_service.hpp>
 
-namespace ircd
-{
-	std::exception_ptr make_eptr(const boost::system::error_code &ec);
-
-	string_view string(const mutable_buffer &, const boost::system::error_code &);
-	string_view string(const mutable_buffer &, const boost::system::system_error &);
-	std::string string(const boost::system::error_code &);
-	std::string string(const boost::system::system_error &);
-}
-
 struct ircd::strand
 :asio::io_service::strand
 {
diff --git a/include/ircd/ios.h b/include/ircd/ios.h
index 52beb5dc7..6955929a9 100644
--- a/include/ircd/ios.h
+++ b/include/ircd/ios.h
@@ -30,6 +30,7 @@
 namespace boost::system
 {
 	struct error_code;
+	struct system_error;
 	namespace errc {}
 }
 
@@ -63,6 +64,13 @@ namespace ircd
 
 	void post(std::function<void ()>);
 	void dispatch(std::function<void ()>);
+
+	// Forward utilities for boost errors
+	std::exception_ptr make_eptr(const boost::system::error_code &ec);
+	string_view string(const mutable_buffer &, const boost::system::error_code &);
+	string_view string(const mutable_buffer &, const boost::system::system_error &);
+	std::string string(const boost::system::error_code &);
+	std::string string(const boost::system::system_error &);
 }
 
 inline void