diff --git a/asminc/errno.inc b/asminc/errno.inc
index f541a7843..5f980cbf6 100644
--- a/asminc/errno.inc
+++ b/asminc/errno.inc
@@ -2,9 +2,10 @@
 ; Ullrich von Bassewitz, 16.05.2000
 ;
 
-; errno variable
+; Variables and functions
 
-        .global         __errno
+        .global         __errno, __oserror
+        .global         __maperrno, __osmaperrno
 
 ; Error codes, must match the values in the C headers
 ENOENT		=	1	; No such file or directory