diff --git a/src/scanadf.c b/src/scanadf.c
--- a/src/scanadf.c
+++ b/src/scanadf.c
@@ -1195,6 +1195,7 @@
 
 	case 0:
 	  /*  in child process  */
+	  signal(SIGCHLD, SIG_DFL);
 	  sprintf(cmd, "%s '%s'", script, fname);
 	  /*	  system(cmd); */
 	  execle(script, script, fname, NULL, environ);