diff --git a/xorriso/text_io.c b/xorriso/text_io.c
index c2754ae0..6253cba6 100644
--- a/xorriso/text_io.c
+++ b/xorriso/text_io.c
@@ -2185,6 +2185,8 @@ int Xorriso_sieve_filter_msg(struct XorrisO *xorriso, char *msg, int flag)
      l= strlen(prefix);
      if(strlen(msg) >= (unsigned int) l) {
        if(l - skip == 0 || strncmp(prefix + skip, msg + skip, l - skip) == 0) {
+         Xorriso_free_meM(prefix_storage);
+         prefix_storage= NULL;
          Xorriso_alloc_meM(prefix_storage, char, l + 1);
          strncpy(prefix_storage, msg, l);
          prefix_storage[l]= 0;
@@ -2275,8 +2277,6 @@ int Xorriso_sieve_filter_msg(struct XorrisO *xorriso, char *msg, int flag)
      prev_lst= lst;
    }
    (f->num_results)++;
-   Xorriso_free_meM(prefix_storage);
-   prefix_storage= NULL;
    Xorriso__dispose_words(&argc, &argv);
  }
  ret= 1;
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index 6748b5c5..a8ab0b9b 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2015.10.25.123601"
+#define Xorriso_timestamP "2015.11.03.125130"