diff --git a/include/bl31/bl31.h b/include/bl31/bl31.h
index b3567e2..aac6e28 100644
--- a/include/bl31/bl31.h
+++ b/include/bl31/bl31.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2016, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -13,10 +13,10 @@
  * Function prototypes
  ******************************************************************************/
 void bl31_next_el_arch_setup(uint32_t security_state);
-void bl31_set_next_image_type(uint32_t type);
+void bl31_set_next_image_type(uint32_t security_state);
 uint32_t bl31_get_next_image_type(void);
 void bl31_prepare_next_image_entry(void);
-void bl31_register_bl32_init(int32_t (*)(void));
+void bl31_register_bl32_init(int32_t (*func)(void));
 void bl31_warm_entrypoint(void);
 
 #endif /* __BL31_H__ */