diff --git a/platform-mc/platform_manager.cpp b/platform-mc/platform_manager.cpp
index 1dd2cca..008fdf9 100644
--- a/platform-mc/platform_manager.cpp
+++ b/platform-mc/platform_manager.cpp
@@ -448,7 +448,8 @@
     pldm_tid_t tid, pldm_event_message_global_enable eventMessageGlobalEnable,
     pldm_transport_protocol_type protocolType, uint16_t heartbeatTimer)
 {
-    size_t requestBytes = PLDM_SET_EVENT_RECEIVER_REQ_BYTES;
+    size_t requestBytes = PLDM_SET_EVENT_RECEIVER_REQ_BYTES +
+                          PLDM_SET_EVENT_RECEIVER_REQ_HEARTBEAT_BYTES;
     /**
      * Ignore heartbeatTimer bytes when eventMessageGlobalEnable is not
      * ENABLE_ASYNC_KEEP_ALIVE