diff --git a/include/linux/sched.h b/include/linux/sched.h
index bd89fc17767c..43ed34ccb53a 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1509,9 +1509,6 @@ static inline void set_task_cpu(struct task_struct *p, unsigned int cpu)
 extern long sched_setaffinity(pid_t pid, const struct cpumask *new_mask);
 extern long sched_getaffinity(pid_t pid, struct cpumask *mask);
 
-extern int task_can_switch_user(struct user_struct *up,
-					struct task_struct *tsk);
-
 #ifndef TASK_SIZE_OF
 #define TASK_SIZE_OF(tsk)	TASK_SIZE
 #endif