diff --git a/1.4/Assemblies/RJW_Menstruation.dll b/1.4/Assemblies/RJW_Menstruation.dll
index c94be92..4568f00 100644
Binary files a/1.4/Assemblies/RJW_Menstruation.dll and b/1.4/Assemblies/RJW_Menstruation.dll differ
diff --git a/1.4/source/RJW_Menstruation/RJW_Menstruation/Cum.cs b/1.4/source/RJW_Menstruation/RJW_Menstruation/Cum.cs
index 969dde3..6afa95d 100644
--- a/1.4/source/RJW_Menstruation/RJW_Menstruation/Cum.cs
+++ b/1.4/source/RJW_Menstruation/RJW_Menstruation/Cum.cs
@@ -205,7 +205,7 @@ namespace RJW_Menstruation
             // comp is used for Hydrogen's RJW Muscle Injury
             float totalleak = volume;
             float decayPerInterval = 1 - Mathf.Pow(1 - Configurations.CumDecayRatio, (float)comp.TickInterval / GenDate.TicksPerHour);
-            float fertilityDecayPerInterval = 1 - Mathf.Pow(Configurations.CumFertilityDecayRatio, (float)comp.TickInterval / GenDate.TicksPerHour);
+            float fertilityDecayPerInterval = 1 - Mathf.Pow(1 - Configurations.CumFertilityDecayRatio, (float)comp.TickInterval / GenDate.TicksPerHour);
             volume *= Math.Max(0, 1 - decayPerInterval * (1 - DecayResist) * leakfactor);
             fertility *= Math.Max(0, 1 - (fertilityDecayPerInterval * (1 - DecayResist) + antisperm));
             CutMinor();