diff --git a/src/vim.h b/src/vim.h
index a501a71..fc23a47 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -1927,7 +1927,7 @@
     GdkAtom     gtk_sel_atom;	/* PRIMARY/CLIPBOARD selection ID */
 # endif
 
-# ifdef MSWIN
+# if defined(MSWIN) || defined(FEAT_CYGWIN_WIN32_CLIPBOARD)
     int_u	format;		/* Vim's own special clipboard format */
     int_u	format_raw;	/* Vim's raw text clipboard format */
 # endif