diff --git a/include/plan9/libc.h b/include/plan9/libc.h
index fe7667b861f..9a880505a4d 100644
--- a/include/plan9/libc.h
+++ b/include/plan9/libc.h
@@ -14,6 +14,8 @@ char*	getgoversion(void);
 char*	getgoarm(void);
 char*	getgo386(void);
 char*	getgoextlinkenabled(void);
+char*	getgohostos(void);
+char*	getgohostarch(void);
 
 int	runcmd(char**);