diff -ruN paps-0.6.6.orig/src/paps.c paps-0.6.6/src/paps.c
--- paps-0.6.6.orig/src/paps.c	2006-05-25 15:12:02.000000000 +0900
+++ paps-0.6.6/src/paps.c	2006-05-25 15:15:58.000000000 +0900
@@ -453,7 +453,7 @@
   GList *result = NULL;
   char *last_para = text;
   
-  while (*p)
+  while (p != NULL && *p)
     {
       wc = g_utf8_get_char (p);
       next = g_utf8_next_char (p);