diff --git a/basis/io/unix/files/freebsd/freebsd.factor b/basis/io/unix/files/freebsd/freebsd.factor
index 42857d1132..e6fff4dfe0 100644
--- a/basis/io/unix/files/freebsd/freebsd.factor
+++ b/basis/io/unix/files/freebsd/freebsd.factor
@@ -1,7 +1,7 @@
 ! Copyright (C) 2008 Doug Coleman.
 ! See http://factorcode.org/license.txt for BSD license.
 USING: kernel alien.syntax math io.unix.files system
-unix.stat accessors combinators calendar ;
+unix.stat accessors combinators calendar.unix ;
 IN: io.unix.files.freebsd
 
 TUPLE: freebsd-file-info < unix-file-info birth-time flags gen ;
diff --git a/basis/io/unix/files/netbsd/netbsd.factor b/basis/io/unix/files/netbsd/netbsd.factor
index c61304c128..6a41e6e18a 100644
--- a/basis/io/unix/files/netbsd/netbsd.factor
+++ b/basis/io/unix/files/netbsd/netbsd.factor
@@ -1,7 +1,7 @@
 ! Copyright (C) 2008 Doug Coleman.
 ! See http://factorcode.org/license.txt for BSD license.
 USING: kernel alien.syntax math io.unix.files system
-unix.stat accessors combinators calendar ;
+unix.stat accessors combinators calendar.unix ;
 IN: io.unix.files.netbsd
 
 TUPLE: netbsd-file-info < unix-file-info birth-time flags gen ;
diff --git a/basis/io/unix/files/openbsd/openbsd.factor b/basis/io/unix/files/openbsd/openbsd.factor
index e1473eed4d..5723827481 100644
--- a/basis/io/unix/files/openbsd/openbsd.factor
+++ b/basis/io/unix/files/openbsd/openbsd.factor
@@ -1,7 +1,7 @@
 ! Copyright (C) 2008 Doug Coleman.
 ! See http://factorcode.org/license.txt for BSD license.
 USING: kernel alien.syntax math io.unix.files system
-unix.stat accessors combinators calendar ;
+unix.stat accessors combinators calendar.unix ;
 IN: io.unix.files.openbsd
 
 TUPLE: openbsd-file-info < unix-file-info birth-time flags gen ;