diff --git a/basis/io/unix/select/select.factor b/basis/io/unix/select/select.factor
index f0547da10e..8638ae7be5 100644
--- a/basis/io/unix/select/select.factor
+++ b/basis/io/unix/select/select.factor
@@ -2,7 +2,7 @@
 ! See http://factorcode.org/license.txt for BSD license.
 USING: alien.c-types kernel io.ports io.unix.backend
 bit-arrays sequences assocs unix math namespaces structs
-accessors math.order locals ;
+accessors math.order locals unix.time ;
 IN: io.unix.select
 
 TUPLE: select-mx < mx read-fdset write-fdset ;