diff --git a/sv/sv1200b.uml b/sv/sv1200b.uml
index 023a33f0d..867152cf9 100755
--- a/sv/sv1200b.uml
+++ b/sv/sv1200b.uml
@@ -86,6 +86,8 @@ BOOL F_FLAGT2
 BEGIN
   PROMPT 2 11 "                                  "
   FLAGS "D"
+  MESSAGE TRUE ENABLE,F_FLAGT3
+  MESSAGE FALSE CLEAR,F_FLAGT3
 END
 
 BOOL F_FLAGT3