--- gif2png.c.orig	2006-07-07 16:40:33.000000000 -0400
+++ gif2png.c	2006-07-07 16:43:25.000000000 -0400
@@ -135,7 +135,7 @@
     unsigned long hist_maxvalue;
     int passcount;
     int errtype, errorcount = 0;
-    png_text software;
+    png_text comment, software;
 
     /* these volatile declarations prevent gcc warnings ("variable might be
      *  clobbered by `longjmp' or `vfork'") */
@@ -517,10 +517,15 @@
 	    j = s->size;
 	    if (j > 0 && data[j-1] == '\0')  /* some apps include a NULL in GIF comment */
 		--j;
-	    if (j<500) {
-		png_write_tEXt(png_ptr, "Comment", (png_charp)data, j);
+      if (j<1000) {
+        comment.compression = PNG_TEXT_COMPRESSION_NONE;
 	    } else {
-		png_write_zTXt(png_ptr, "Comment", (png_charp)data, j, 0);
+        comment.compression = PNG_TEXT_COMPRESSION_zTXt;
+        comment.key = "Comment";
+        comment.text = data;
+        comment.text_length = j;
+
+        png_set_text(png_ptr, info_ptr, &comment, 1);
 	    }
 	    break;