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	2006-09-30 02:51:39.000000000 +0900
+++ paps-0.6.6/src/paps.c	2006-09-30 03:00:26.000000000 +0900
@@ -346,7 +346,7 @@
       if (!IN)
         {
           fprintf(stderr, "Failed to open %s!\n", filename_in);
-          exit(-1);
+          exit(1);
         }
     }
   else
@@ -457,7 +457,7 @@
       if (cvh == NULL)
         {
           fprintf(stderr, "%s: Invalid encoding: %s\n", g_get_prgname (), encoding);
-          exit(-1);
+          exit(1);
         }
     }
 
@@ -517,7 +517,7 @@
         {
           fprintf(stderr, "%s: Error reading file.\n", g_get_prgname ());
           g_string_free (inbuf, TRUE);
-          return NULL;
+          exit(1);
         }
       else if (bp == NULL)
         break;
@@ -531,7 +531,7 @@
           if (g_iconv (handle, &ib, &iblen, &ob, &oblen) == -1)
             {
               fprintf (stderr, "%s: Error while converting strings.\n", g_get_prgname ());
-              return NULL;
+              exit(1);
             }
           obuffer[BUFSIZE * 6 - 1 - oblen] = 0;
         }
@@ -591,7 +591,7 @@
 	      if (wtext == NULL)
 	        {
 		  fprintf (stderr, "Failed to convert UTF-8 to UCS-4.\n");
-		  return NULL;
+                  exit(1);
 		}
 
 	      len = wcswidth (wtext);
@@ -604,7 +604,7 @@
 		    {
 		      fprintf (stderr, "Failed to allocate a memory.\n");
 		      g_free (wtext);
-		      return NULL;
+                      exit(1);
 		    }
 		  for (i = 0; i < len; i++)
 		    {
@@ -619,7 +619,7 @@
 		  if (newtext == NULL)
 		    {
 		      fprintf (stderr, "Failed to convert UCS-4 to UTF-8.\n");
-		      return NULL;
+                      exit(1);
 		    }
 
 		  pango_layout_set_text (para->layout, newtext, -1);