diff --git a/include/types/server.h b/include/types/server.h
index 40b8308..abd1130 100644
--- a/include/types/server.h
+++ b/include/types/server.h
@@ -82,6 +82,16 @@
 	SRV_ADMF_DRAIN     = 0x18,        /* mask to check if any drain flag is present */
 };
 
+/* server-state-file version */
+#define SRV_STATE_FILE_VERSION 1
+#define SRV_STATE_FILE_VERSION_MIN 1
+#define SRV_STATE_FILE_VERSION_MAX 1
+#define SRV_STATE_FILE_FIELD_NAMES "be_id be_name srv_id srv_name srv_addr srv_op_state srv_admin_state srv_uweight srv_iweight srv_time_since_last_change srv_check_status srv_check_result srv_check_health srv_check_state srv_agent_state bk_f_forced_id srv_f_forced_id"
+#define SRV_STATE_FILE_MAX_FIELDS 18
+#define SRV_STATE_FILE_NB_FIELDS_VERSION_1 18
+#define SRV_STATE_LINE_MAXLEN 512
+
+
 /* server flags */
 #define SRV_F_BACKUP       0x0001        /* this server is a backup server */
 #define SRV_F_MAPPORTS     0x0002        /* this server uses mapped ports */