diff --git a/src/types/format.ts b/src/types/format.ts
index ab7b6b1..0693e03 100644
--- a/src/types/format.ts
+++ b/src/types/format.ts
@@ -14,7 +14,7 @@ declare global {
 
     interface leg {
         title: string
-        step_title: string[]
+        day_title: string[]
         date_range: [Date, Date] | null
         map: map
         travel: unknown[]
@@ -27,6 +27,7 @@ declare global {
     }
 
     interface journey {
+        fmt_ver: number
         title: string
         name: string | null
         main: leg[]
@@ -34,6 +35,7 @@ declare global {
 }
 
 const journey_template: journey = {
+    fmt_ver: 1,
     title: "New Journey",
     name: null,
     main: [],
@@ -41,7 +43,7 @@ const journey_template: journey = {
 
 const leg_template: leg = {
     title: "New Leg",
-    step_title: [],
+    day_title: [],
     map: { zoom: 2, center: { lng: 0, lat: 0 } },
     travel: [],
     hotel: null,