diff --git a/drivers/arm/rss/rss_comms.c b/drivers/arm/rss/rss_comms.c
index a1f5daa..8b5002f 100644
--- a/drivers/arm/rss/rss_comms.c
+++ b/drivers/arm/rss/rss_comms.c
@@ -42,11 +42,11 @@
 
 	comms_embed_msg_min_size = sizeof(struct serialized_rss_comms_header_t) +
 				   sizeof(struct rss_embed_msg_t) -
-				   RSS_COMMS_PAYLOAD_MAX_SIZE;
+				   PLAT_RSS_COMMS_PAYLOAD_MAX_SIZE;
 
 	comms_embed_reply_min_size = sizeof(struct serialized_rss_comms_header_t) +
 				     sizeof(struct rss_embed_reply_t) -
-				     RSS_COMMS_PAYLOAD_MAX_SIZE;
+				     PLAT_RSS_COMMS_PAYLOAD_MAX_SIZE;
 
 	/* Use embed if we can pack into one message and reply, else use
 	 * pointer_access. The underlying MHU transport protocol uses a
diff --git a/drivers/arm/rss/rss_comms_protocol_embed.h b/drivers/arm/rss/rss_comms_protocol_embed.h
index 6c2a7bd..609d099 100644
--- a/drivers/arm/rss/rss_comms_protocol_embed.h
+++ b/drivers/arm/rss/rss_comms_protocol_embed.h
@@ -30,13 +30,13 @@
 	psa_handle_t handle;
 	uint32_t ctrl_param; /* type, in_len, out_len */
 	uint16_t io_size[PSA_MAX_IOVEC];
-	uint8_t trailer[RSS_COMMS_PAYLOAD_MAX_SIZE];
+	uint8_t trailer[PLAT_RSS_COMMS_PAYLOAD_MAX_SIZE];
 };
 
 struct __packed rss_embed_reply_t {
 	int32_t return_val;
 	uint16_t out_size[PSA_MAX_IOVEC];
-	uint8_t trailer[RSS_COMMS_PAYLOAD_MAX_SIZE];
+	uint8_t trailer[PLAT_RSS_COMMS_PAYLOAD_MAX_SIZE];
 };
 
 psa_status_t rss_protocol_embed_serialize_msg(psa_handle_t handle,