diff --git a/include/os/linux/spl/sys/mutex.h b/include/os/linux/spl/sys/mutex.h
index 73da23685..93f3af8fe 100644
--- a/include/os/linux/spl/sys/mutex.h
+++ b/include/os/linux/spl/sys/mutex.h
@@ -26,6 +26,7 @@
 #define	_SPL_MUTEX_H
 
 #include <sys/types.h>
+#include <linux/sched.h>
 #include <linux/mutex.h>
 #include <linux/lockdep.h>
 #include <linux/compiler_compat.h>