diff --git a/src/signal_handler.c b/src/signal_handler.c
index 86eceb73973cb5feb0eee326f3c04067ca71348f..ae2d5baa8bb3e4bbe9d26be5812ebfcb307836c2 100644
--- a/src/signal_handler.c
+++ b/src/signal_handler.c
@@ -23,7 +23,7 @@
 #include "builtin_functions.h"
 #include <signal.h>
 
-RCSID("$Id: signal_handler.c,v 1.115 1999/03/08 05:34:37 hubbe Exp $");
+RCSID("$Id: signal_handler.c,v 1.116 1999/03/10 00:33:04 hubbe Exp $");
 
 #ifdef HAVE_PASSWD_H
 # include <passwd.h>
@@ -809,7 +809,9 @@ static void do_da_lock(void)
 
 static void do_bi_do_da_lock(void)
 {
+#ifdef PROC_DEBUG
   fprintf(stderr, "wait thread: This is your wakeup call!\n");
+#endif
   co_signal(&start_wait_thread);
   mt_unlock(&wait_thread_mutex);
 }