diff --git a/Defs/HediffDefs/Overzealous.xml b/Defs/HediffDefs/Overzealous.xml
index 72be2ff..a115cba 100644
--- a/Defs/HediffDefs/Overzealous.xml
+++ b/Defs/HediffDefs/Overzealous.xml
@@ -114,6 +114,7 @@
 				<statOffsets>
 				<!-- Optional. Can offset pawn stat(s) by value -->
 					<CarryingCapacity>500</CarryingCapacity>
+                    <MassCapacity>500</MassCapacity>
 					<ComfyTemperatureMin>-50</ComfyTemperatureMin>
 					<ComfyTemperatureMax>50</ComfyTemperatureMax>
 					<ImmunityGainSpeed>10</ImmunityGainSpeed>