--- src/608_spupng.cpp.orig     2014-03-19 10:32:47.578960867 -0600
+++ src/608_spupng.cpp  2014-03-19 10:33:00.692179157 -0600
@@ -490,7 +490,7 @@
 {
     unsigned int i;
 
-    if (setjmp (png_ptr->jmpbuf))
+    if (setjmp(png_jmpbuf(png_ptr)))
             return 0;
 
     png_init_io (png_ptr, fppng);