1 files changed, 4 insertions, 0 deletions

diff --git a/zconf.h b/zconf.h
index f9a5fa7..8c6f945 100644
--- a/zconf.h
+++ b/zconf.h
@@ -402,6 +402,10 @@ typedef uLong FAR uLongf;
 #  endif
 #endif
 
+#ifdef _WIN32
+#  include <stddef.h>           /* for wchar_t */
+#endif
+
 /* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and
  * "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even
  * though the former does not conform to the LFS document), but considering