diff --git a/src/Fl_Button.cxx b/src/Fl_Button.cxx
index 044d1e443..dec3fdd5f 100644
--- a/src/Fl_Button.cxx
+++ b/src/Fl_Button.cxx
@@ -130,11 +130,13 @@ int Fl_Button::handle(int event) {
     if (type() == FL_RADIO_BUTTON && !value_) {
       setonly();
       set_changed();
-      if (when() & FL_WHEN_CHANGED) do_callback();
+      if (when() & (FL_WHEN_CHANGED|FL_WHEN_RELEASE) ) 
+	  do_callback();
     } else if (type() == FL_TOGGLE_BUTTON) {
       value(!value());
       set_changed();
-      if (when() & FL_WHEN_CHANGED) do_callback();
+      if (when() & (FL_WHEN_CHANGED|FL_WHEN_RELEASE)) 
+	  do_callback();
     } else if (when() & FL_WHEN_RELEASE) do_callback();
     return 1;
   case FL_FOCUS :