diff --git a/include/bits/stdio.h b/include/bits/stdio.h
index 23d913d779..9d4a595df3 100644
--- a/include/bits/stdio.h
+++ b/include/bits/stdio.h
@@ -1,6 +1,8 @@
 #ifndef _BITS_STDIO_H
 #define _BITS_STDIO_H
 
+#define EOF (-1)
+
 typedef struct FILE FILE;
 
 int fprintf(FILE * stream, const char * fmt, ...);