diff --git a/extra/io/encodings/detect/detect-tests.factor b/extra/io/encodings/detect/detect-tests.factor
index 570f84d1b9..5dbebd9001 100644
--- a/extra/io/encodings/detect/detect-tests.factor
+++ b/extra/io/encodings/detect/detect-tests.factor
@@ -1,5 +1,8 @@
 ! (c)2010 Joe Groff bsd license
-USING: byte-arrays.hex io.encodings.8-bit.koi8-r io.encodings.detect tools.test ;
+USING: byte-arrays byte-arrays.hex io.encodings.8-bit.koi8-r
+io.encodings.8-bit.latin1 io.encodings.binary
+io.encodings.detect io.encodings.utf16 io.encodings.utf32
+io.encodings.utf8 namespaces tools.test ;
 IN: io.encodings.detect.tests
 
 ! UTF encodings with BOMs