diff --git a/basis/io/mmap/ushort/ushort.factor b/basis/io/mmap/ushort/ushort.factor
index e0989aa9d4..6d5ac016cf 100644
--- a/basis/io/mmap/ushort/ushort.factor
+++ b/basis/io/mmap/ushort/ushort.factor
@@ -1,4 +1,4 @@
-USE: specialized-arrays.functor
-IN: specialized-arrays.ushort
+USING: io.mmap.functor specialized-arrays.direct.ushort ;
+IN: io.mmap.ushort
 
-<< "ushort" define-array >>
\ No newline at end of file
+<< "ushort" define-mapped-array >>
\ No newline at end of file