diff --git a/asminc/errno.inc b/asminc/errno.inc
index 8f79d94e9..82d01cd3b 100644
--- a/asminc/errno.inc
+++ b/asminc/errno.inc
@@ -28,6 +28,7 @@
         ENOSYS 	       	        ; Function not implemented
         ESPIPE 	       	        ; Illegal seek
         ERANGE                  ; Range error
+        EBADF                   ; Bad file number
         EUNKNOWN       	        ; Unknown OS specific error - must be last!
 
         EMAX    = EUNKNOWN      ; Highest error code
diff --git a/include/errno.h b/include/errno.h
index 5dba2a1f7..c0e786623 100644
--- a/include/errno.h
+++ b/include/errno.h
@@ -74,7 +74,8 @@ extern int _errno;
 #define ENOSYS		13	/* Function not implemented */
 #define ESPIPE		14	/* Illegal seek */
 #define ERANGE          15      /* Range error */
-#define EUNKNOWN       	16	/* Unknown OS specific error */
+#define EBADF           16      /* Bad file number */
+#define EUNKNOWN       	17	/* Unknown OS specific error */