diff --git a/FSDJumpEntry.cs b/FSDJumpEntry.cs
index 0cb736c..c96da6f 100644
--- a/FSDJumpEntry.cs
+++ b/FSDJumpEntry.cs
@@ -6,7 +6,7 @@ namespace EDJournal {
         protected override void Initialise() {
             SystemAddress = JSON.Value<ulong?>("SystemAddress") ?? 0;
             StarSystem = JSON.Value<string>("StarSystem");
-            StarPos = JSON.Value<JArray>("StarPos").ToObject<ulong[]>();
+            StarPos = JSON.Value<JArray>("StarPos").ToObject<long[]>();
 
             var faction = JSON.Value<JObject>("SystemFaction");
             if (faction != null) {
@@ -23,13 +23,10 @@ namespace EDJournal {
                 }
             }
         }
-        public ulong[] StarPos { get; set; }
+        public long[] StarPos { get; set; }
         public string StarSystem { get; set; }
-
         public string SystemFaction { get; set; }
-
         public ulong SystemAddress { get; set; }
-
         public List<Faction> SystemFactions { get; set; } = new List<Faction>();
     }
 }
diff --git a/LocationEntry.cs b/LocationEntry.cs
index 3e5aa39..57ea669 100644
--- a/LocationEntry.cs
+++ b/LocationEntry.cs
@@ -13,7 +13,7 @@ namespace EDJournal {
         public ulong SystemAddress { get; set; }
         public string Body { get; set; }
         public bool Docked { get; set; }
-        public ulong[] StarPos { get; set; }
+        public long[] StarPos { get; set; }
 
         public List<Faction> SystemFactions { get; set; } = new List<Faction>();
 
@@ -22,7 +22,7 @@ namespace EDJournal {
             SystemAddress = JSON.Value<ulong?>("SystemAddress") ?? 0;
             Docked = JSON.Value<bool?>("Docked") ?? false;
             StationName = JSON.Value<string>("StationName") ?? "";
-            StarPos = JSON.Value<JArray>("StarPos").ToObject<ulong[]>();
+            StarPos = JSON.Value<JArray>("StarPos").ToObject<long[]>();
 
             JObject systemfaction = JSON.Value<JObject>("SystemFaction");
             if (systemfaction != null) {