diff --git a/bin/sh/jobs.h b/bin/sh/jobs.h
--- a/bin/sh/jobs.h
+++ b/bin/sh/jobs.h
@@ -55,7 +55,7 @@
 void showjobs(int, int);
 struct job *makejob(union node *, int);
 pid_t forkshell(struct job *, union node *, int);
-pid_t vforkexecshell(struct job *, char **, char **, const char *, int, int []);
+pid_t vforkexecshell(struct job *, char **, char **, const char *, int, int [2]);
 int waitforjob(struct job *, int *);
 int stoppedjobs(void);
 int backgndpidset(void);