diff --git a/1.4/Assemblies/RJW_Menstruation.dll b/1.4/Assemblies/RJW_Menstruation.dll
index 4179a95..7aadb4a 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/UI/Dialog_WombStatus.cs b/1.4/source/RJW_Menstruation/RJW_Menstruation/UI/Dialog_WombStatus.cs
index e90643b..8a8e380 100644
--- a/1.4/source/RJW_Menstruation/RJW_Menstruation/UI/Dialog_WombStatus.cs
+++ b/1.4/source/RJW_Menstruation/RJW_Menstruation/UI/Dialog_WombStatus.cs
@@ -230,7 +230,7 @@ namespace RJW_Menstruation
                         fontstyleright.alignment = TextAnchor.MiddleRight;
                         buttonstyle.alignment = TextAnchor.MiddleLeft;
 
-                        string father = p.Father.LabelShort;
+                        string father = p.Father?.LabelShort ?? Translations.Dialog_FatherUnknown;
 
                         GUI.Box(preginfo, "1 " + p.Mother.def.label + " " + Translations.Dialog_WombInfo02, buttonstyle);
                         GUI.Label(preginfo, Translations.Dialog_WombInfo03 + ": " + father + "  ", fontstyleright);
diff --git a/changelogs.txt b/changelogs.txt
index 425353e..5242c1d 100644
--- a/changelogs.txt
+++ b/changelogs.txt
@@ -5,6 +5,7 @@ Version 1.0.8.1
  - Pawns that are genetically sterile will no longer produce fertile cum, nor have a menstrual cycle.
  - Biotech IUDs will now reduce pregnancy chances the same as an RJW IUD. Using both will not stack.
  - A biotech pregnancy will pause before going into labor if another womb already is in labor.
+ - Fix errors in womb dialog for Biotech pregnancies with null father.
 
 Version 1.0.8.0
  - Support for RimWorld 1.4. All future changes to Menstruation will only be for Rimworld 1.4.