diff --git a/core/cpu/x86/64/64.factor b/core/cpu/x86/64/64.factor
index 8a9a0c89dd..6d99b72439 100755
--- a/core/cpu/x86/64/64.factor
+++ b/core/cpu/x86/64/64.factor
@@ -1,6 +1,6 @@
 ! Copyright (C) 2005, 2007 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: alien.c-types arrays cpu.x86.assembler
+USING: accessors alien.c-types arrays cpu.x86.assembler
 cpu.x86.architecture cpu.x86.intrinsics cpu.x86.sse2
 cpu.x86.allot cpu.architecture kernel kernel.private math
 namespaces sequences generator.registers generator.fixup system