--- a/contrib/unzip/unzip.h	2019-08-21 21:38:10.991542891 +0200
+++ b/contrib/unzip/unzip.h	2019-08-21 21:38:24.507543226 +0200
@@ -45,6 +45,8 @@
 #ifndef _unz_H
 #define _unz_H
 
+#define OF _Z_OF
+
 #ifdef __cplusplus
 extern "C" {
 #endif