1 files changed, 9 insertions, 1 deletions

diff --git a/src/lib/libcrypto/bio/bio_lcl.h b/src/lib/libcrypto/bio/bio_lcl.h
index dba2919d43..e7f7ec8d8b 100644
--- a/src/lib/libcrypto/bio/bio_lcl.h
+++ b/src/lib/libcrypto/bio/bio_lcl.h
@@ -18,11 +18,19 @@
 #define UP_ftell        ftell
 #define UP_fflush       fflush
 #define UP_ferror       ferror
+#ifdef _WIN32
+#define UP_fileno       _fileno
+#define UP_open         _open
+#define UP_read         _read
+#define UP_write        _write
+#define UP_lseek        _lseek
+#define UP_close        _close
+#else
 #define UP_fileno       fileno
-
 #define UP_open         open
 #define UP_read         read
 #define UP_write        write
 #define UP_lseek        lseek
 #define UP_close        close
 #endif
+#endif