diff --git a/xorriso/text_io.c b/xorriso/text_io.c
index b92fd686..94224a82 100644
--- a/xorriso/text_io.c
+++ b/xorriso/text_io.c
@@ -1589,6 +1589,8 @@ int Xorriso_sieve_clear_results(struct XorrisO *xorriso, int flag)
 {
  struct Xorriso_msg_filteR *f;
 
+ if(xorriso->msg_sieve == NULL)
+   return(1);
  for(f= xorriso->msg_sieve->first_filter; f != NULL; f= f->next) {
    f->num_results= 0;
    f->num_delivered= 0;
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index ac1cc0b2..cdaa6fdf 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2012.12.25.175536"
+#define Xorriso_timestamP "2012.12.25.180844"