diff --git a/ui/win32/file_dlg_win32.c b/ui/win32/file_dlg_win32.c
index c66b0f4537..9a2eed528c 100644
--- a/ui/win32/file_dlg_win32.c
+++ b/ui/win32/file_dlg_win32.c
@@ -264,7 +264,7 @@ win32_check_save_as_with_comments(HWND parent, capture_file *cf, int file_type)
     comment_types = cf_comment_types(cf);
 
     /* Does the file's format support all the comments we have? */
-    if (wtap_dump_supports_comment_types(cf->cd_t, comment_types)) {
+    if (wtap_dump_supports_comment_types(file_type, comment_types)) {
         /* Yes.  Let the save happen; we can save all the comments, so
            there's no need to delete them. */
         return SAVE;