diff --git a/src/code/exports.lisp b/src/code/exports.lisp
index 3273cebeab00b6b87b97b29da6c2ea4c9788e938..82ee63febfce0a86298e932e888df2e12b715bb1 100644
--- a/src/code/exports.lisp
+++ b/src/code/exports.lisp
@@ -248,6 +248,10 @@
 	   "CLOSE-DIR"
 	   "OPEN-DIR"
 	   "READ-DIR"
+
+	   ;; linux-os, sunos-os.
+	   "UNIX-UNAME"
+
 	   ;; filesys.lisp
 	   "UNIX-GETPWUID"