diff --git a/MechJeb2/Maneuver/OperationApoapsis.cs b/MechJeb2/Maneuver/OperationApoapsis.cs
index 0d1b7420..73e298df 100644
--- a/MechJeb2/Maneuver/OperationApoapsis.cs
+++ b/MechJeb2/Maneuver/OperationApoapsis.cs
@@ -19,7 +19,7 @@ public OperationApoapsis()
         {
             _timeSelector = new TimeSelector(new[]
             {
-                TimeReference.PERIAPSIS, TimeReference.X_FROM_NOW, TimeReference.ALTITUDE, TimeReference.EQ_DESCENDING, TimeReference.EQ_ASCENDING
+                TimeReference.PERIAPSIS, TimeReference.APOAPSIS, TimeReference.X_FROM_NOW, TimeReference.ALTITUDE, TimeReference.EQ_DESCENDING, TimeReference.EQ_ASCENDING
             });
         }
 
diff --git a/MechJeb2/Maneuver/OperationPeriapsis.cs b/MechJeb2/Maneuver/OperationPeriapsis.cs
index 83cb93b7..37ef3b59 100644
--- a/MechJeb2/Maneuver/OperationPeriapsis.cs
+++ b/MechJeb2/Maneuver/OperationPeriapsis.cs
@@ -18,7 +18,7 @@ public class OperationPeriapsis : Operation
 
         public OperationPeriapsis()
         {
-            _timeSelector = new TimeSelector(new[] { TimeReference.APOAPSIS, TimeReference.X_FROM_NOW, TimeReference.ALTITUDE });
+            _timeSelector = new TimeSelector(new[] { TimeReference.APOAPSIS, TimeReference.PERIAPSIS, TimeReference.X_FROM_NOW, TimeReference.ALTITUDE });
         }
 
         public override void DoParametersGUI(Orbit o, double universalTime, MechJebModuleTargetController target)