diff --git a/make_gen b/make_gen
index bbba4864..7018008d 100644
--- a/make_gen
+++ b/make_gen
@@ -47,7 +47,7 @@ SOBJ =  network.o ifile.o conman.o SCinter.o splitter.o passwd.o \
        histmemsec.o sansbc.o sicsutil.o strlutil.o genbinprot.o trace.o\
        singlebinb.o taskobj.o sctcomtask.o tasmono.o multicountersec.o \
        messagepipe.o sicsget.o remoteobject.o pmacprot.o charbychar.o binprot.o \
-       cnvrt.o tclClock.o tclDate.o tclUnixTime.o 	     
+       cnvrt.o tclClock.o tclDate.o tclUnixTime.o stack_trace.o 	     
  
 MOTOROBJ = motor.o  simdriv.o  
 COUNTEROBJ =  countdriv.o simcter.o counter.o