diff --git a/core/bootstrap/stage1.factor b/core/bootstrap/stage1.factor
index 088a8a6320..c7be17e38d 100644
--- a/core/bootstrap/stage1.factor
+++ b/core/bootstrap/stage1.factor
@@ -1,9 +1,9 @@
 ! Copyright (C) 2004, 2009 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: arrays debugger generic hashtables io assocs kernel.private
-kernel math memory namespaces make parser prettyprint sequences
-vectors words system splitting init io.files vocabs vocabs.loader
-debugger continuations ;
+USING: arrays assocs continuations debugger generic hashtables
+init io io.files kernel kernel.private make math memory
+namespaces parser prettyprint sequences splitting system
+vectors vocabs vocabs.loader words ;
 QUALIFIED: bootstrap.image.private
 IN: bootstrap.stage1
 
diff --git a/core/checksums/checksums.factor b/core/checksums/checksums.factor
index 1d57823e18..9d40521fc8 100644
--- a/core/checksums/checksums.factor
+++ b/core/checksums/checksums.factor
@@ -1,7 +1,7 @@
 ! Copyright (c) 2008 Slava Pestov
 ! See http://factorcode.org/license.txt for BSD license.
 USING: accessors io io.backend io.files kernel math math.parser
-sequences vectors io.encodings.binary quotations ;
+sequences vectors quotations ;
 IN: checksums
 
 MIXIN: checksum
@@ -39,7 +39,7 @@ GENERIC: get-checksum ( checksum -- value )
     ] with-input-stream ;
 
 : add-checksum-file ( checksum-state path -- checksum-state )
-    binary <file-reader> add-checksum-stream ;
+    normalize-path (file-reader) add-checksum-stream ;
 
 GENERIC: checksum-bytes ( bytes checksum -- value )