diff -r -u -w --strip-trailing-cr zlib-1.2.8.original/contrib/minizip/iowin32.c zlib-1.2.8/contrib/minizip/iowin32.c
--- zlib-1.2.8.original/contrib/minizip/iowin32.c	2016-05-09 16:07:52.540693800 +0200
+++ zlib-1.2.8/contrib/minizip/iowin32.c	2016-05-09 16:07:50.505008500 +0200
@@ -26,11 +26,9 @@
 #endif
 
 
-#if defined(WINAPI_FAMILY_PARTITION) && (!(defined(IOWIN32_USING_WINRT_API)))
-#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP)
+#if _WIN32_WINNT >= 0x0602
 #define IOWIN32_USING_WINRT_API 1
 #endif
-#endif
 
 voidpf  ZCALLBACK win32_open_file_func  OF((voidpf opaque, const char* filename, int mode));
 uLong   ZCALLBACK win32_read_file_func  OF((voidpf opaque, voidpf stream, void* buf, uLong size));
@@ -243,7 +241,7 @@
     return SetFilePointerEx(hFile, pos, newPos, dwMoveMethod);
 #else
     LONG lHigh = pos.HighPart;
-    DWORD dwNewPos = SetFilePointer(hFile, pos.LowPart, &lHigh, FILE_CURRENT);
+    DWORD dwNewPos = SetFilePointer(hFile, pos.LowPart, &lHigh, dwMoveMethod);
     BOOL fOk = TRUE;
     if (dwNewPos == 0xFFFFFFFF)
         if (GetLastError() != NO_ERROR)
@@ -370,7 +368,7 @@
     {
         LARGE_INTEGER pos;
         pos.QuadPart = offset;
-        if (!MySetFilePointerEx(hFile, pos, NULL, FILE_CURRENT))
+        if (!MySetFilePointerEx(hFile, pos, NULL, dwMoveMethod))
         {
             DWORD dwErr = GetLastError();
             ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;