--- open_jtalk-1.09/jpcommon/jpcommon_label-org.c	2015-12-25 10:14:27.000000000 +0900
+++ open_jtalk-1.09/jpcommon/jpcommon_label.c	2015-12-28 08:55:43.560668141 +0900
@@ -296,6 +296,7 @@
       if (index == a)
          break;
    }
+   if (i > 3) i = 3;
    return i;
 }
 
@@ -395,6 +396,7 @@
 
    for (i = 0, index = m->next; index != NULL; index = index->next)
       i++;
+   if (i > 10) i = 10;
    return index_mora_in_utterance(m) + i;
 }