diff --git a/src/msw/files.lst b/src/msw/files.lst
index a4d6e527bf..7c1c8a97ec 100644
--- a/src/msw/files.lst
+++ b/src/msw/files.lst
@@ -658,7 +658,6 @@ ALL_HEADERS = \
 		generic/imaglist.h \
 		generic/laywin.h \
 		generic/listctrl.h \
-		generic/mdig.cpp \
 		generic/msgdlgg.h \
 		generic/notebook.h \
 		generic/paletteg.h \