diff --git a/extra/io/windows/windows.factor b/extra/io/windows/windows.factor
index 97349f5537..abfffdf93a 100755
--- a/extra/io/windows/windows.factor
+++ b/extra/io/windows/windows.factor
@@ -2,7 +2,7 @@
 ! See http://factorcode.org/license.txt for BSD license.
 USING: alien alien.c-types arrays destructors io io.backend
 io.buffers io.files io.ports io.sockets io.binary
-io.sockets windows.errors strings
+io.sockets io.timeouts windows.errors strings
 kernel math namespaces sequences windows windows.kernel32
 windows.shell32 windows.types windows.winsock splitting
 continuations math.bitfields system accessors ;