diff --git a/extra/io/unix/kqueue/kqueue.factor b/extra/io/unix/kqueue/kqueue.factor
old mode 100644
new mode 100755
index 8e8fb0ec74..ec82a426d3
--- a/extra/io/unix/kqueue/kqueue.factor
+++ b/extra/io/unix/kqueue/kqueue.factor
@@ -3,7 +3,7 @@
 USING: alien.c-types kernel math math.bitfields namespaces
 locals accessors combinators threads vectors hashtables
 sequences assocs continuations sets
-unix unix.time unix.kqueue unix.process
+unix.ffi unix unix.time unix.kqueue unix.process
 io.nonblocking io.unix.backend io.launcher io.unix.launcher
 io.monitors ;
 IN: io.unix.kqueue