diff -ur VisualBoyAdvance-1.7.2.orig/src/Util.cpp VisualBoyAdvance-1.7.2/src/Util.cpp
--- VisualBoyAdvance-1.7.2.orig/src/Util.cpp	2004-05-20 10:42:37.000000000 -0700
+++ VisualBoyAdvance-1.7.2/src/Util.cpp	2012-02-18 00:21:40.655194387 -0800
@@ -984,7 +984,7 @@
 
 gzFile utilGzOpen(const char *file, const char *mode)
 {
-  utilGzWriteFunc = (int (*)(void *,void * const, unsigned int))gzwrite;
+  utilGzWriteFunc = (int (*)(gzFile, void * const, unsigned int))gzwrite;
   utilGzReadFunc = gzread;
   utilGzCloseFunc = gzclose;