diff --git a/os2-support.rkt b/os2-support.rkt
index 3393c4c..54e5068 100644
--- a/os2-support.rkt
+++ b/os2-support.rkt
@@ -2,9 +2,11 @@
 ;; Reexport racket-matrix module contents.
 
 (require "../racket-matrix/os2.rkt")
+(require "../racket-matrix/os2-event-relay.rkt")
 (require "../racket-matrix/os2-timer.rkt")
 (require "../racket-matrix/os2-tcp.rkt")
 
 (provide (all-from-out "../racket-matrix/os2.rkt"))
+(provide (all-from-out "../racket-matrix/os2-event-relay.rkt"))
 (provide (all-from-out "../racket-matrix/os2-timer.rkt"))
 (provide (all-from-out "../racket-matrix/os2-tcp.rkt"))