diff --git a/bl1/bl1_fwu.c b/bl1/bl1_fwu.c
index 49e4e8e25cb4f814278f7216b5cf3eb7dc879679..25be57708f7029820f9bc4639cc828c7fe83de1f 100644
--- a/bl1/bl1_fwu.c
+++ b/bl1/bl1_fwu.c
@@ -24,12 +24,12 @@
  * Function declarations.
  */
 static int bl1_fwu_image_copy(unsigned int image_id,
-			uintptr_t image_addr,
+			uintptr_t image_src,
 			unsigned int block_size,
 			unsigned int image_size,
 			unsigned int flags);
 static int bl1_fwu_image_auth(unsigned int image_id,
-			uintptr_t image_addr,
+			uintptr_t image_src,
 			unsigned int image_size,
 			unsigned int flags);
 static int bl1_fwu_image_execute(unsigned int image_id,
@@ -50,7 +50,7 @@ __dead2 static void bl1_fwu_done(void *client_cookie, void *reserved);
 static unsigned int sec_exec_image_id = INVALID_IMAGE_ID;
 
 /* Authentication status of each image. */
-extern unsigned int auth_img_flags[];
+extern unsigned int auth_img_flags[MAX_NUMBER_IDS];
 
 /*******************************************************************************
  * Top level handler for servicing FWU SMCs.
diff --git a/drivers/auth/auth_mod.c b/drivers/auth/auth_mod.c
index 1cea60b220deab682fa2449ab64383e3bcc03361..eb537b66a1065343f066d8d92d8888137d81b7ae 100644
--- a/drivers/auth/auth_mod.c
+++ b/drivers/auth/auth_mod.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -30,7 +30,7 @@
 
 /* Pointer to CoT */
 extern const auth_img_desc_t *const cot_desc_ptr;
-extern unsigned int auth_img_flags[];
+extern unsigned int auth_img_flags[MAX_NUMBER_IDS];
 
 static int cmp_auth_param_type_desc(const auth_param_type_desc_t *a,
 		const auth_param_type_desc_t *b)
diff --git a/include/common/tbbr/tbbr_img_def.h b/include/common/tbbr/tbbr_img_def.h
index 060198bc149a506ed09210b3541e9eb2a81fcd9a..273abbea060b3f961d9db3f70a8faa067b58ed77 100644
--- a/include/common/tbbr/tbbr_img_def.h
+++ b/include/common/tbbr/tbbr_img_def.h
@@ -75,4 +75,7 @@
 /* NT_FW_CONFIG */
 #define NT_FW_CONFIG_ID		27
 
+/* Define size of the array */
+#define MAX_NUMBER_IDS			28
+
 #endif /* __TBBR_IMG_DEF_H__ */
diff --git a/include/drivers/auth/auth_mod.h b/include/drivers/auth/auth_mod.h
index bd65098036d2e5ce5d8be4f8ef16b87ca6c13972..74fc15fc16eb8e674b85ca8cd46d0e6387c18db9 100644
--- a/include/drivers/auth/auth_mod.h
+++ b/include/drivers/auth/auth_mod.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -12,6 +12,7 @@
 #include <auth_common.h>
 #include <cot_def.h>
 #include <img_parser_mod.h>
+#include <tbbr_img_def.h>
 
 /*
  * Image flags
@@ -41,7 +42,7 @@ int auth_mod_verify_img(unsigned int img_id,
 #define REGISTER_COT(_cot) \
 	const auth_img_desc_t *const cot_desc_ptr = \
 			(const auth_img_desc_t *const)&_cot[0]; \
-	unsigned int auth_img_flags[sizeof(_cot)/sizeof(_cot[0])]
+	unsigned int auth_img_flags[MAX_NUMBER_IDS]
 
 #endif /* TRUSTED_BOARD_BOOT */
 
diff --git a/include/drivers/auth/crypto_mod.h b/include/drivers/auth/crypto_mod.h
index 08884ab2218a55ba80ad79e170c6e1689f7dad9f..7a1b6b807a2e2b479c7748b8147875fa1a781b3e 100644
--- a/include/drivers/auth/crypto_mod.h
+++ b/include/drivers/auth/crypto_mod.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -43,7 +43,7 @@ typedef struct crypto_lib_desc_s {
 void crypto_mod_init(void);
 int crypto_mod_verify_signature(void *data_ptr, unsigned int data_len,
 				void *sig_ptr, unsigned int sig_len,
-				void *sig_alg, unsigned int sig_alg_len,
+				void *sig_alg_ptr, unsigned int sig_alg_len,
 				void *pk_ptr, unsigned int pk_len);
 int crypto_mod_verify_hash(void *data_ptr, unsigned int data_len,
 			   void *digest_info_ptr, unsigned int digest_info_len);
diff --git a/include/drivers/auth/img_parser_mod.h b/include/drivers/auth/img_parser_mod.h
index 347ed621cf149d99ccb569e473ca894287ef5d4c..eaf3e6e7abf164cc668406d24a9954a278ca9eef 100644
--- a/include/drivers/auth/img_parser_mod.h
+++ b/include/drivers/auth/img_parser_mod.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -44,10 +44,10 @@ typedef struct img_parser_lib_desc_s {
 /* Exported functions */
 void img_parser_init(void);
 int img_parser_check_integrity(img_type_t img_type,
-		void *img, unsigned int img_len);
+		void *img_ptr, unsigned int img_len);
 int img_parser_get_auth_param(img_type_t img_type,
 		const auth_param_type_desc_t *type_desc,
-		void *img, unsigned int img_len,
+		void *img_ptr, unsigned int img_len,
 		void **param_ptr, unsigned int *param_len);
 
 /* Macro to register an image parser library */