diff --git a/extra/io/unix/files/files.factor b/extra/io/unix/files/files.factor
index 3201c29c45..a70f7339d2 100755
--- a/extra/io/unix/files/files.factor
+++ b/extra/io/unix/files/files.factor
@@ -1,7 +1,8 @@
 ! Copyright (C) 2005, 2008 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
 USING: io.backend io.nonblocking io.unix.backend io.files io
-unix kernel math continuations math.bitfields ;
+unix kernel math continuations math.bitfields byte-arrays
+alien ;
 IN: io.unix.files
 
 M: unix-io cwd
diff --git a/extra/unix/process/process.factor b/extra/unix/process/process.factor
index c315d10d7f..6fdc8e358b 100755
--- a/extra/unix/process/process.factor
+++ b/extra/unix/process/process.factor
@@ -1,6 +1,6 @@
 USING: kernel alien.c-types sequences math unix
 combinators.cleave vectors kernel namespaces continuations
-threads assocs vectors ;
+threads assocs vectors io.unix.backend ;
 
 IN: unix.process