diff --git a/sc2/src/sc2code/planets/planets.h b/sc2/src/sc2code/planets/planets.h
index bce15d474..953a98420 100644
--- a/sc2/src/sc2code/planets/planets.h
+++ b/sc2/src/sc2code/planets/planets.h
@@ -202,6 +202,7 @@ extern BOOLEAN DoFlagshipCommands (PMENU_STATE pMS);
 extern void ZoomSystem (void);
 extern void LoadSolarSys (void);
 extern void InitLander (BYTE LanderFlags);
+extern BOOLEAN ValidateOrbits (void);
 
 #endif /* _PLANETS_H */
 
diff --git a/sc2/src/sc2code/planets/pstarmap.c b/sc2/src/sc2code/planets/pstarmap.c
index d6d69e8c0..a80c25122 100644
--- a/sc2/src/sc2code/planets/pstarmap.c
+++ b/sc2/src/sc2code/planets/pstarmap.c
@@ -1293,6 +1293,7 @@ DoFlagshipCommands (PMENU_STATE pMS)
 								FreePlanet ();
 								SetSemaphore (GraphicsSem);
 								LoadSolarSys ();
+								ValidateOrbits ();
 								ZoomSystem ();
 								ClearSemaphore (GraphicsSem);
 							}
diff --git a/sc2/src/sc2code/planets/solarsys.c b/sc2/src/sc2code/planets/solarsys.c
index 2e778e5be..055d6f62b 100644
--- a/sc2/src/sc2code/planets/solarsys.c
+++ b/sc2/src/sc2code/planets/solarsys.c
@@ -1219,7 +1219,7 @@ DrawInnerSystem (void)
 	ClearSemaphore (GraphicsSem);
 }
 
-static BOOLEAN
+BOOLEAN
 ValidateOrbits (void)
 {
 	BYTE i;