diff --git a/drivers/powercap/idle_inject.c b/drivers/powercap/idle_inject.c
index 4310901a074e..6e1a0043c411 100644
--- a/drivers/powercap/idle_inject.c
+++ b/drivers/powercap/idle_inject.c
@@ -43,6 +43,7 @@
 #include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/smpboot.h>
+#include <linux/idle_inject.h>
 
 #include <uapi/linux/sched/types.h>