diff --git a/include/drivers/io/io_driver.h b/include/drivers/io/io_driver.h
index 2b704f4..d8bb435 100644
--- a/include/drivers/io/io_driver.h
+++ b/include/drivers/io/io_driver.h
@@ -39,7 +39,7 @@
 	io_type_t (*type)(void);
 	int (*open)(io_dev_info_t *dev_info, const uintptr_t spec,
 			io_entity_t *entity);
-	int (*seek)(io_entity_t *entity, int mode, ssize_t offset);
+	int (*seek)(io_entity_t *entity, int mode, signed long long offset);
 	int (*size)(io_entity_t *entity, size_t *length);
 	int (*read)(io_entity_t *entity, uintptr_t buffer, size_t length,
 			size_t *length_read);