--- export.c	2008-03-14 07:20:05.000000000 +0100
+++ export.c.new	2010-05-19 13:39:20.000000000 +0200
@@ -516,8 +516,8 @@
   atext[1].compression = PNG_TEXT_COMPRESSION_NONE;
 
 #ifdef PNG_iTXt_SUPPORTED
-  text_ptr[0].lang = NULL;
-  text_ptr[1].lang = NULL;
+  atext[0].lang = NULL;
+  atext[1].lang = NULL;
 #endif
   png_set_text (ppng, pinfo, atext, 2);