diff --git a/1.4/source/RJW_Menstruation/RJW_Menstruation/Hediff_MultiplePregnancy.cs b/1.4/source/RJW_Menstruation/RJW_Menstruation/Hediff_MultiplePregnancy.cs
index 8bcee00..1af1ea2 100644
--- a/1.4/source/RJW_Menstruation/RJW_Menstruation/Hediff_MultiplePregnancy.cs
+++ b/1.4/source/RJW_Menstruation/RJW_Menstruation/Hediff_MultiplePregnancy.cs
@@ -13,8 +13,8 @@ namespace RJW_Menstruation
     {
         protected Dictionary<Pawn, Pawn> enzygoticSiblings = new Dictionary<Pawn, Pawn>();  // Each pawn and who they split from
 
-        protected readonly MethodInfo TryGetInheritedXenotype = typeof(PregnancyUtility).GetMethod("TryGetInheritedXenotype", BindingFlags.Static | BindingFlags.NonPublic, null, new Type[] { typeof(Pawn), typeof(Pawn), typeof(XenotypeDef).MakeByRefType() }, null );
-        protected readonly MethodInfo ShouldByHybrid = typeof(PregnancyUtility).GetMethod("ShouldByHybrid", BindingFlags.Static | BindingFlags.NonPublic, null, new Type[] { typeof(Pawn), typeof(Pawn) }, null);
+        protected static readonly MethodInfo TryGetInheritedXenotype = typeof(PregnancyUtility).GetMethod("TryGetInheritedXenotype", BindingFlags.Static | BindingFlags.NonPublic, null, new Type[] { typeof(Pawn), typeof(Pawn), typeof(XenotypeDef).MakeByRefType() }, null );
+        protected static readonly MethodInfo ShouldByHybrid = typeof(PregnancyUtility).GetMethod("ShouldByHybrid", BindingFlags.Static | BindingFlags.NonPublic, null, new Type[] { typeof(Pawn), typeof(Pawn) }, null);
 
         public override void DiscoverPregnancy()
         {