diff --git a/include/linux/sysrq.h b/include/linux/sysrq.h
index 98a1d8c..99adcdc 100644
--- a/include/linux/sysrq.h
+++ b/include/linux/sysrq.h
@@ -14,6 +14,8 @@
 #ifndef _LINUX_SYSRQ_H
 #define _LINUX_SYSRQ_H
 
+#include <linux/errno.h>
+
 struct pt_regs;
 struct tty_struct;