diff --git a/basis/windows/com/wrapper/wrapper.factor b/basis/windows/com/wrapper/wrapper.factor
index 2af416fb7e..25b11a6a1d 100755
--- a/basis/windows/com/wrapper/wrapper.factor
+++ b/basis/windows/com/wrapper/wrapper.factor
@@ -4,7 +4,7 @@ namespaces windows.ole32 libc vocabs assocs accessors arrays
 sequences quotations combinators math words compiler.units
 destructors fry math.parser generalizations sets
 specialized-arrays.alien specialized-arrays.direct.alien
-windows.kernel32 ;
+windows.kernel32 classes.struct ;
 IN: windows.com.wrapper
 
 TUPLE: com-wrapper < disposable callbacks vtbls ;