diff --git a/basis/tools/disassembler/gdb/gdb.factor b/basis/tools/disassembler/gdb/gdb.factor
index 84aefb16aa..62406d272e 100644
--- a/basis/tools/disassembler/gdb/gdb.factor
+++ b/basis/tools/disassembler/gdb/gdb.factor
@@ -1,9 +1,8 @@
 ! Copyright (C) 2008, 2010 Slava Pestov, Jorge Acereda Macia.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: io.files io.files.temp io words alien kernel math.parser
-alien.syntax io.launcher assocs arrays sequences namespaces make
-system math io.encodings.ascii accessors tools.disassembler
-tools.disassembler.private locals ;
+USING: accessors io io.encodings.ascii io.files io.files.temp
+io.launcher locals make math math.parser namespaces
+tools.disassembler.private ;
 IN: tools.disassembler.gdb
 
 SINGLETON: gdb-disassembler