diff --git a/shellbox.tcl b/shellbox.tcl
index 73b0352..3ac253e 100755
--- a/shellbox.tcl
+++ b/shellbox.tcl
@@ -32,8 +32,8 @@ set timeout -1
 
 regsub -all {\$} {shellbox by Dirk Zimoch
 $Source: /cvs/G/EPICS/App/scripts/shellbox.tcl,v $
-$Revision: 1.11 $
-$Date: 2015/04/02 09:42:20 $} {} version
+$Revision: 1.12 $
+$Date: 2015/08/28 14:18:51 $} {} version
 
 proc usage {} {
     puts "usage: shellbox \[options\] port command args"
@@ -204,6 +204,7 @@ if {![regexp {^[0-9]+$} $port] || [llength $command] == 0} {
 }
 
 fconfigure stdout -buffering none
+trap {killProgram; exit} {SIGTERM}
 startProgram
 createServer $port
 vwait forever