diff --git a/src/xz/private.h b/src/xz/private.h
index 57606cd6..8542427f 100644
--- a/src/xz/private.h
+++ b/src/xz/private.h
@@ -36,6 +36,10 @@
 #	include <windows.h>
 #endif
 
+#ifdef _MSC_VER
+#	define fileno _fileno
+#endif
+
 #ifndef STDIN_FILENO
 #	define STDIN_FILENO (fileno(stdin))
 #endif