diff --git a/basis/cpu/x86/64/winnt/winnt.factor b/basis/cpu/x86/64/winnt/winnt.factor
index 8091be65ae..44e8568658 100644
--- a/basis/cpu/x86/64/winnt/winnt.factor
+++ b/basis/cpu/x86/64/winnt/winnt.factor
@@ -1,7 +1,8 @@
 ! Copyright (C) 2008 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
 USING: kernel layouts system math alien.c-types sequences
-compiler.cfg.registers cpu.architecture cpu.x86.assembler cpu.x86 ;
+compiler.cfg.registers cpu.architecture cpu.x86.assembler cpu.x86
+cpu.x86.assembler.operands ;
 IN: cpu.x86.64.winnt
 
 M: int-regs param-regs drop { RCX RDX R8 R9 } ;