diff --git a/include/linux/sched.h b/include/linux/sched.h
index f18102c4d0b8ee30e3524878663c4cd734943ff6..754b3deed02bf483e3f18d94a7d9407374cc2957 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -171,8 +171,6 @@ print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
 }
 #endif
 
-extern unsigned long long time_sync_thresh;
-
 /*
  * Task state bitmask. NOTE! These bits are also
  * encoded in fs/proc/array.c: get_task_state().