diff --git a/reactos/lib/crt/conio/ungetch.c b/reactos/lib/crt/conio/ungetch.c
index 31829a1ec97..28a74046de9 100644
--- a/reactos/lib/crt/conio/ungetch.c
+++ b/reactos/lib/crt/conio/ungetch.c
@@ -10,10 +10,11 @@
  *              28/12/98: Created
  */
 
+#include <stdio.h>
 #include <conio.h>
 #include <internal/console.h>
 
-#define EOF -1
+
 
 int char_avail = 0;
 int ungot_char = 0;