diff --git a/core/io/encodings/utf16/utf16-tests.factor b/core/io/encodings/utf16/utf16-tests.factor
index ac5caba61c..fd251c76db 100755
--- a/core/io/encodings/utf16/utf16-tests.factor
+++ b/core/io/encodings/utf16/utf16-tests.factor
@@ -1,5 +1,6 @@
 USING: kernel tools.test io.encodings.utf16 arrays sbufs
-io.streams.byte-array sequences io.encodings io unicode
+io.streams.byte-array sequences io.encodings io
+bootstrap.unicode
 io.encodings.string alien.c-types alien.strings accessors classes ;
 IN: io.encodings.utf16.tests
 
diff --git a/core/io/encodings/utf8/utf8-tests.factor b/core/io/encodings/utf8/utf8-tests.factor
index af169854c9..a99575b4ba 100755
--- a/core/io/encodings/utf8/utf8-tests.factor
+++ b/core/io/encodings/utf8/utf8-tests.factor
@@ -1,4 +1,5 @@
-USING: io.encodings.utf8 tools.test io.encodings.string strings arrays unicode ;
+USING: io.encodings.utf8 tools.test io.encodings.string strings arrays
+bootstrap.unicode ;
 IN: io.encodings.utf8.tests
 
 : decode-utf8-w/stream ( array -- newarray )