diff --git a/basis/system-info/windows/windows.factor b/basis/system-info/windows/windows.factor
index 8aa295519a..d51223b69b 100644
--- a/basis/system-info/windows/windows.factor
+++ b/basis/system-info/windows/windows.factor
@@ -4,7 +4,7 @@ USING: accessors alien alien.c-types alien.data alien.strings
 arrays byte-arrays classes.struct combinators kernel math
 namespaces specialized-arrays system
 vocabs.loader windows windows.advapi32
-windows.errors windows.kernel32 words ;
+windows.errors windows.kernel32 words system-info ;
 SPECIALIZED-ARRAY: ushort
 IN: system-info.windows