diff --git a/basis/iokit/hid/hid.factor b/basis/iokit/hid/hid.factor
index b3894d7b49..ca339a78ef 100644
--- a/basis/iokit/hid/hid.factor
+++ b/basis/iokit/hid/hid.factor
@@ -1,7 +1,7 @@
 USING: iokit alien alien.syntax alien.c-types kernel system
 core-foundation core-foundation.arrays core-foundation.data
 core-foundation.dictionaries core-foundation.run-loop
-core-foundation.strings core-foundation.time ;
+core-foundation.strings core-foundation.time unix.types ;
 IN: iokit.hid
 
 CONSTANT: kIOHIDDeviceKey "IOHIDDevice"