diff --git a/drivers/misc/ihs_fpga.c b/drivers/misc/ihs_fpga.c
index 71c4226..4923c81 100644
--- a/drivers/misc/ihs_fpga.c
+++ b/drivers/misc/ihs_fpga.c
@@ -14,6 +14,7 @@
 #include <log.h>
 #include <regmap.h>
 #include <asm/gpio.h>
+#include <linux/delay.h>
 
 #include "ihs_fpga.h"