diff --git a/1.4/source/RJW_Menstruation/RJW_Menstruation/HediffComps/HediffComp_Menstruation.cs b/1.4/source/RJW_Menstruation/RJW_Menstruation/HediffComps/HediffComp_Menstruation.cs
index 4b265f4..e5cfef8 100644
--- a/1.4/source/RJW_Menstruation/RJW_Menstruation/HediffComps/HediffComp_Menstruation.cs
+++ b/1.4/source/RJW_Menstruation/RJW_Menstruation/HediffComps/HediffComp_Menstruation.cs
@@ -678,6 +678,7 @@ namespace RJW_Menstruation
             estrusLevel = Props.concealedEstrus ? EstrusLevel.Concealed : EstrusLevel.Visible;
             ovulationFactor = 1f;
             noBleeding = false;
+            opcache = -1;
             
             if (Pawn.genes == null || !ModsConfig.BiotechActive) return;