diff --git a/include/stdio.h b/include/stdio.h
index 0643b8a290..6379072ba9 100644
--- a/include/stdio.h
+++ b/include/stdio.h
@@ -96,6 +96,8 @@
 #  define fsetpos64 fsetpos
 #endif
 
+#define setlinebuf(stream)   setvbuf(stream, NULL, _IOLBF, 0)
+
 /****************************************************************************
  * Public Type Definitions
  ****************************************************************************/