diff --git a/src/galaxy/starSystems.c b/src/galaxy/starSystems.c
index cddc3d5..c29b6b9 100644
--- a/src/galaxy/starSystems.c
+++ b/src/galaxy/starSystems.c
@@ -180,7 +180,10 @@ void updateStarSystemMissions(void)
 			{
 				starSystem->availableMissions++;
 				
-				starSystem->activeMission = mission;
+				if (!mission->completed)
+				{
+					starSystem->activeMission = mission;
+				}
 			}
 
 			prev = mission;