diff --git a/include/mask.cpp b/include/mask.cpp
index 738495105..f5f1fe4d1 100755
--- a/include/mask.cpp
+++ b/include/mask.cpp
@@ -1806,9 +1806,7 @@ TButton_field& TMask::add_button (
   //     <mf TMask::add_date> <mf TMask::add_radio> <mf TMask::add_memo>
 {
   TButton_field* f = new TButton_field(this);
-  f->construct(id, prompt, x, y, dy, win(page), flags, dx);
-  if (bmpup > 0)
-    f->set_bmp(bmpup, bmpdn);
+  f->construct(id, prompt, x, y, dy, win(page), flags, dx, bmpup, bmpdn);
   add_field(f);
   return *f;
 }