plumbunmount
diff --git a/include/plumb.h b/include/plumb.h
index 20bfcd7..484042e 100644
--- a/include/plumb.h
+++ b/include/plumb.h
@@ -55,6 +55,7 @@
 char*		plumblookup(Plumbattr*, char*);
 int			plumbopen(char*, int);
 int			eplumb(int, char*);
+int			plumbunmount(void);
 
 #ifdef _9PCLIENT_H_
 CFid*		plumbopenfid(char*, int);