diff --git a/Runtime/World/CScriptDamageableTrigger.hpp b/Runtime/World/CScriptDamageableTrigger.hpp
index 2f7bead29..c66710ab9 100644
--- a/Runtime/World/CScriptDamageableTrigger.hpp
+++ b/Runtime/World/CScriptDamageableTrigger.hpp
@@ -34,7 +34,7 @@ public:
   zeus::CTransform x214_faceDirInv;
   zeus::CVector3f x244_faceTranslate;
   float x250_alphaTimer = 0.f;
-  CFluidPlaneDoor x254_fluidPlane;
+  mutable CFluidPlaneDoor x254_fluidPlane;
   union {
     struct {
       bool x300_24_notOccluded : 1;