diff --git a/extra/io/unix/backend/backend.factor b/extra/io/unix/backend/backend.factor
index 08ff526f14..902af8fe0d 100644
--- a/extra/io/unix/backend/backend.factor
+++ b/extra/io/unix/backend/backend.factor
@@ -1,7 +1,7 @@
 ! Copyright (C) 2004, 2008 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
 USING: alien generic assocs kernel kernel.private math
-io.nonblocking sequences strings structs sbufs threads unix
+io.nonblocking sequences strings structs sbufs threads unix.ffi unix
 vectors io.buffers io.backend io.encodings math.parser
 continuations system libc qualified namespaces io.timeouts
 io.encodings.utf8 accessors ;
diff --git a/extra/io/unix/sockets/sockets.factor b/extra/io/unix/sockets/sockets.factor
index b60cb5760e..71edbc5500 100755
--- a/extra/io/unix/sockets/sockets.factor
+++ b/extra/io/unix/sockets/sockets.factor
@@ -5,7 +5,7 @@ namespaces threads sequences byte-arrays io.nonblocking
 io.binary io.unix.backend io.streams.duplex io.sockets.impl
 io.backend io.files io.files.private io.encodings.utf8
 math.parser continuations libc combinators system accessors
-qualified unix ;
+qualified unix.ffi unix ;
 
 EXCLUDE: io => read write close ;
 EXCLUDE: io.sockets => accept ;