--- gpsbabel-1.4.3.orig/gbfile.c	2011-07-26 03:56:33.000000000 +0200
+++ gpsbabel-1.4.3/gbfile.c	2012-08-24 13:46:51.008504331 +0200
@@ -84,9 +84,9 @@
       fd = stdout;
     }
     SET_BINARY_MODE(fd);
-    self->handle.gz = (void**)gzdopen(fileno(fd), openmode);
+    self->handle.gz = gzdopen(fileno(fd), openmode);
   } else {
-    self->handle.gz = (void**)gzopen(self->name, openmode);
+    self->handle.gz = gzopen(self->name, openmode);
   }
 
   if (self->handle.gz == NULL) {
--- gpsbabel-1.4.3.orig/gbfile.h	2011-07-26 03:56:33.000000000 +0200
+++ gpsbabel-1.4.3/gbfile.h	2012-08-24 13:54:18.958996856 +0200
@@ -52,7 +52,7 @@
     FILE* std;
     unsigned char* mem;
 #if !ZLIB_INHIBITED
-    gzFile* gz;
+    gzFile gz;
 #endif
   } handle;
   char*   name;