diff --git a/Runtime/Character/CModelData.hpp b/Runtime/Character/CModelData.hpp
index 3ff8359d7..d6b6f3576 100644
--- a/Runtime/Character/CModelData.hpp
+++ b/Runtime/Character/CModelData.hpp
@@ -32,7 +32,7 @@ public:
 
   CAssetId GetId() const { return x0_cmdlId; }
   const zeus::CVector3f& GetScale() const { return x4_scale; }
-  operator bool() const { return x0_cmdlId != 0; }
+  explicit operator bool() const { return x0_cmdlId != 0; }
 };
 
 class CAnimRes {