diff --git a/contrib/minizip/ioapi.h b/contrib/minizip/ioapi.h
index 114bfab7..ae9ca7e8 100644
--- a/contrib/minizip/ioapi.h
+++ b/contrib/minizip/ioapi.h
@@ -50,7 +50,7 @@
 #define ftello64 ftell
 #define fseeko64 fseek
 #else
-#ifdef __FreeBSD__
+#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
 #define fopen64 fopen
 #define ftello64 ftello
 #define fseeko64 fseeko