--- namot-2.2.0-pre4/src/graphics.c.org	2006-03-03 22:33:11.000000000 -0500
+++ namot-2.2.0-pre4/src/graphics.c	2006-03-03 22:38:21.000000000 -0500
@@ -1331,7 +1331,7 @@
 PackPNGRows(
     ) {
     int ctr1=0,ctr2=0;
-    char *srcptr=NULL;
+    unsigned char *srcptr=NULL;
     png_byte **row_pointers;
     long pos=0;
     void *Imageptr;
--- namot-2.2.0-pre4/src/x.h.org	2006-03-03 22:39:06.000000000 -0500
+++ namot-2.2.0-pre4/src/x.h	2006-03-03 22:43:11.000000000 -0500
@@ -17,8 +17,9 @@
  */
 
 #define Long 	long
+#ifndef HAVE_PNG_H
 #define Byte	unsigned char
-
+#endif
 extern void InitX();
 
 #ifdef GRAPHICS