diff --git a/Runtime/Weapon/CBomb.cpp b/Runtime/Weapon/CBomb.cpp
index 9f6216dfc..4ae123bf3 100644
--- a/Runtime/Weapon/CBomb.cpp
+++ b/Runtime/Weapon/CBomb.cpp
@@ -62,7 +62,7 @@ void CBomb::AcceptScriptMsg(EScriptObjectMessage msg, TUniqueId uid, CStateManag
   CActor::AcceptScriptMsg(msg, uid, mgr);
 }
 
-static CMaterialFilter kSolidFilter =
+constexpr CMaterialFilter kSolidFilter =
     CMaterialFilter::MakeIncludeExclude({EMaterialTypes::Solid}, {EMaterialTypes::Character, EMaterialTypes::Player,
                                                                   EMaterialTypes::ProjectilePassthrough});
 void CBomb::Think(float dt, urde::CStateManager& mgr) {