diff --git a/BGS/Report.cs b/BGS/Report.cs
index dcfe7ef..479b7a8 100644
--- a/BGS/Report.cs
+++ b/BGS/Report.cs
@@ -109,9 +109,9 @@ namespace EliteBGS.BGS {
                     acceptedMissions[accepted.MissionID] = accepted;
                 } else if (e.Is(Events.MissionFailed)) {
                     var failed = e as MissionFailedEntry;
-                    var accepted = acceptedMissions[failed.MissionID];
-                    if (accepted == null) {
-                        OnLog?.Invoke("Mission failed that wasn't accepted, please adjust time frame.");
+                    MissionAcceptedEntry accepted = null;
+                    if (!acceptedMissions.TryGetValue(failed.MissionID, out accepted)) {
+                        OnLog?.Invoke("Mission failed that wasn't accepted in the given time frame, please adjust start date.");
                         continue;
                     }
                     entry = new MissionFailed(accepted) { Failed = failed, System = current_system };