diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index cc898b871cef..5cd0f0949927 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -12,6 +12,7 @@
 #include <linux/securebits.h>
 #include <linux/seqlock.h>
 #include <net/net_namespace.h>
+#include <linux/sched/rt.h>
 
 #ifdef CONFIG_SMP
 # define INIT_PUSHABLE_TASKS(tsk)					\