diff --git a/drivers/fpga/stratix10.c b/drivers/fpga/stratix10.c
index 8020510..da8fa31 100644
--- a/drivers/fpga/stratix10.c
+++ b/drivers/fpga/stratix10.c
@@ -7,6 +7,7 @@
 #include <altera.h>
 #include <log.h>
 #include <asm/arch/mailbox_s10.h>
+#include <linux/delay.h>
 
 #define RECONFIG_STATUS_POLL_RESP_TIMEOUT_MS		60000
 #define RECONFIG_STATUS_INTERVAL_DELAY_US		1000000