diff --git a/libpldm/platform.h b/libpldm/platform.h
index bd4d557..1db7aee 100644
--- a/libpldm/platform.h
+++ b/libpldm/platform.h
@@ -33,6 +33,7 @@
 #define PLDM_PLATFORM_EVENT_MESSAGE_MIN_REQ_BYTES 3
 #define PLDM_PLATFORM_EVENT_MESSAGE_STATE_SENSOR_STATE_REQ_BYTES 6
 #define PLDM_PLATFORM_EVENT_MESSAGE_RESP_BYTES 2
+#define PLDM_PLATFORM_EVENT_MESSAGE_FORMAT_VERSION 1
 
 /* Minumum length of senson event data */
 #define PLDM_SENSOR_EVENT_DATA_MIN_LENGTH 5