diff --git a/ImperatorToCK3/CK3/World.cs b/ImperatorToCK3/CK3/World.cs
index 7d636b2ef..cb5b9495e 100644
--- a/ImperatorToCK3/CK3/World.cs
+++ b/ImperatorToCK3/CK3/World.cs
@@ -384,12 +384,13 @@ public World(Imperator.World impWorld, Configuration config, Thread? irCoaExtrac
 		}
 		Logger.IncrementProgress();
 
+		var modifierMapper = new ModifierMapper("configurables/holy_site_effect_mappings.txt");
+
 		Parallel.Invoke(
 			() => ImportImperatorWars(impWorld, config.CK3BookmarkDate),
 			
 			() => {
-				var holySiteEffectMapper = new HolySiteEffectMapper("configurables/holy_site_effect_mappings.txt");
-				Religions.DetermineHolySites(Provinces, impWorld.Religions, holySiteEffectMapper, config.CK3BookmarkDate);
+				Religions.DetermineHolySites(Provinces, impWorld.Religions, modifierMapper, config.CK3BookmarkDate);
 		
 				Religions.GenerateMissingReligiousHeads(LandedTitles, Characters, Provinces, Cultures, config.CK3BookmarkDate);
 				Logger.IncrementProgress();