diff --git a/services/std_svc/drtm/drtm_main.c b/services/std_svc/drtm/drtm_main.c
index 8d27e96..f2b423a 100644
--- a/services/std_svc/drtm/drtm_main.c
+++ b/services/std_svc/drtm/drtm_main.c
@@ -108,7 +108,7 @@
 				plat_drtm_get_imp_def_dlme_region_size();
 
 	dlme_data_min_size += dlme_data_hdr_init.dlme_addr_map_size +
-			      PLAT_DRTM_EVENT_LOG_MAX_SIZE +
+			      ARM_DRTM_MIN_EVENT_LOG_SIZE +
 			      dlme_data_hdr_init.dlme_tcb_hashes_table_size +
 			      dlme_data_hdr_init.dlme_impdef_region_size;
 
@@ -282,9 +282,9 @@
 
 	/* Prepare DRTM event log for DLME. */
 	drtm_serialise_event_log(dlme_data_cursor, &serialised_bytes_actual);
-	assert(serialised_bytes_actual <= PLAT_DRTM_EVENT_LOG_MAX_SIZE);
-	dlme_data_hdr->dlme_tpm_log_size = serialised_bytes_actual;
-	dlme_data_cursor += serialised_bytes_actual;
+	assert(serialised_bytes_actual <= ARM_DRTM_MIN_EVENT_LOG_SIZE);
+	dlme_data_hdr->dlme_tpm_log_size = ARM_DRTM_MIN_EVENT_LOG_SIZE;
+	dlme_data_cursor +=  dlme_data_hdr->dlme_tpm_log_size;
 
 	/*
 	 * TODO: Prepare the TCB hashes for DLME, currently its size
diff --git a/services/std_svc/drtm/drtm_main.h b/services/std_svc/drtm/drtm_main.h
index a7d053f..c105b56 100644
--- a/services/std_svc/drtm/drtm_main.h
+++ b/services/std_svc/drtm/drtm_main.h
@@ -37,6 +37,11 @@
 		(((a)->dlme_paddr + (a)->dlme_img_off + (a)->dlme_img_ep_off))
 
 /*
+ * Minimum size of Event Log in DLME data (64 KiB)
+ */
+#define ARM_DRTM_MIN_EVENT_LOG_SIZE	U(0x10000)
+
+/*
  * Range(Min/Max) of DRTM parameter structure versions supported
  */
 #define ARM_DRTM_PARAMS_MIN_VERSION	U(1)