diff --git a/include/mask.cpp b/include/mask.cpp
index ca9a229eb..11dc8feb5 100755
--- a/include/mask.cpp
+++ b/include/mask.cpp
@@ -236,7 +236,7 @@ void TMask::set_focus_field(short id)
   const int pos = id2pos(id);
   CHECKD(pos >= 0, "Can't set focus to field ", id);
   _focus = pos;
-  if (is_running())  
+  if (is_open())  
   {
     const TMask_field& f = fld(pos);
     int p = find_parent_page(f);