diff --git a/1.4/source/RJW_Menstruation/RJW_Menstruation/VariousDefOf.cs b/1.4/source/RJW_Menstruation/RJW_Menstruation/VariousDefOf.cs
index 88ab0ef..16903b2 100644
--- a/1.4/source/RJW_Menstruation/RJW_Menstruation/VariousDefOf.cs
+++ b/1.4/source/RJW_Menstruation/RJW_Menstruation/VariousDefOf.cs
@@ -58,9 +58,8 @@ namespace RJW_Menstruation
             get
             {
                 if (allraces != null) return allraces;
+                allraces = DefDatabase<ThingDef>.AllDefsListForReading.Where(thingdef => thingdef.race?.IsFlesh ?? false).ToList();
 
-                List<ThingDef> allThings = DefDatabase<ThingDef>.AllDefsListForReading;
-                allraces = allThings.FindAll(x => x.race != null && x.race.IsFlesh);
                 return allraces;
             }
         }
@@ -69,9 +68,8 @@ namespace RJW_Menstruation
             get
             {
                 if (allkinds != null) return allkinds;
+                allkinds = DefDatabase<PawnKindDef>.AllDefsListForReading.Where(pawnkinddef => pawnkinddef.race != null).ToList();
 
-                List<PawnKindDef> allKinds = DefDatabase<PawnKindDef>.AllDefsListForReading;
-                allkinds = allKinds.FindAll(x => x.race != null);
                 return allkinds;
             }
         }