diff --git a/include/drivers/io_fip.h b/include/drivers/io_fip.h
index 56dd1e0..212570d 100644
--- a/include/drivers/io_fip.h
+++ b/include/drivers/io_fip.h
@@ -31,6 +31,8 @@
 #ifndef __IO_FIP_H__
 #define __IO_FIP_H__
 
+struct io_dev_connector;
+
 int register_io_dev_fip(struct io_dev_connector **dev_con);
 
 #endif /* __IO_FIP_H__ */