diff --git a/extra/io/unix/linux/linux.factor b/extra/io/unix/linux/linux.factor
index 9f135f2958..a452878a43 100755
--- a/extra/io/unix/linux/linux.factor
+++ b/extra/io/unix/linux/linux.factor
@@ -4,7 +4,7 @@ USING: kernel io.backend io.monitors io.monitors.private
 io.files io.buffers io.nonblocking io.timeouts io.unix.backend
 io.unix.select io.unix.launcher unix.linux.inotify assocs
 namespaces threads continuations init math alien.c-types alien
-vocabs.loader accessors ;
+vocabs.loader accessors system ;
 IN: io.unix.linux
 
 TUPLE: linux-monitor ;