diff --git a/drivers/measured_boot/event_log/event_log.c b/drivers/measured_boot/event_log/event_log.c
index 1755dd9..52ed278 100644
--- a/drivers/measured_boot/event_log/event_log.c
+++ b/drivers/measured_boot/event_log/event_log.c
@@ -250,11 +250,11 @@
 	const event_log_metadata_t *metadata_ptr = plat_metadata_ptr;
 
 	/* Get the metadata associated with this image. */
-	while ((metadata_ptr->id != INVALID_ID) &&
+	while ((metadata_ptr->id != EVLOG_INVALID_ID) &&
 		(metadata_ptr->id != data_id)) {
 		metadata_ptr++;
 	}
-	assert(metadata_ptr->id != INVALID_ID);
+	assert(metadata_ptr->id != EVLOG_INVALID_ID);
 
 	/* Calculate hash */
 	rc = crypto_mod_calc_hash((unsigned int)MBEDTLS_MD_ID,
diff --git a/include/drivers/measured_boot/event_log/event_log.h b/include/drivers/measured_boot/event_log/event_log.h
index c6eb29c..78712af 100644
--- a/include/drivers/measured_boot/event_log/event_log.h
+++ b/include/drivers/measured_boot/event_log/event_log.h
@@ -36,9 +36,9 @@
 #endif
 
 /* Number of hashing algorithms supported */
-#define HASH_ALG_COUNT	1U
+#define HASH_ALG_COUNT		1U
 
-#define	INVALID_ID	MAX_NUMBER_IDS
+#define EVLOG_INVALID_ID	MAX_NUMBER_IDS
 
 #define MEMBER_SIZE(type, member) sizeof(((type *)0)->member)
 
diff --git a/plat/arm/board/fvp/fvp_bl1_measured_boot.c b/plat/arm/board/fvp/fvp_bl1_measured_boot.c
index 47af1f5..5468555 100644
--- a/plat/arm/board/fvp/fvp_bl1_measured_boot.c
+++ b/plat/arm/board/fvp/fvp_bl1_measured_boot.c
@@ -17,7 +17,8 @@
 	{ FW_CONFIG_ID, EVLOG_FW_CONFIG_STRING, PCR_0 },
 	{ TB_FW_CONFIG_ID, EVLOG_TB_FW_CONFIG_STRING, PCR_0 },
 	{ BL2_IMAGE_ID, EVLOG_BL2_STRING, PCR_0 },
-	{ INVALID_ID, NULL, (unsigned int)(-1) }	/* Terminator */
+
+	{ EVLOG_INVALID_ID, NULL, (unsigned int)(-1) }	/* Terminator */
 };
 
 void bl1_plat_mboot_init(void)
diff --git a/plat/arm/board/fvp/fvp_bl2_measured_boot.c b/plat/arm/board/fvp/fvp_bl2_measured_boot.c
index 5ebfede..decf13d 100644
--- a/plat/arm/board/fvp/fvp_bl2_measured_boot.c
+++ b/plat/arm/board/fvp/fvp_bl2_measured_boot.c
@@ -24,7 +24,8 @@
 	{ SCP_BL2_IMAGE_ID, EVLOG_SCP_BL2_STRING, PCR_0 },
 	{ SOC_FW_CONFIG_ID, EVLOG_SOC_FW_CONFIG_STRING, PCR_0 },
 	{ TOS_FW_CONFIG_ID, EVLOG_TOS_FW_CONFIG_STRING, PCR_0 },
-	{ INVALID_ID, NULL, (unsigned int)(-1) }	/* Terminator */
+
+	{ EVLOG_INVALID_ID, NULL, (unsigned int)(-1) }	/* Terminator */
 };
 
 void bl2_plat_mboot_init(void)