diff --git a/src/Core/Resource/CResource.h b/src/Core/Resource/CResource.h
index 0b037490..c5908ef2 100644
--- a/src/Core/Resource/CResource.h
+++ b/src/Core/Resource/CResource.h
@@ -16,7 +16,7 @@
 // Must be included on every CResource subclass.
 #define DECLARE_RESOURCE_TYPE(ResourceTypeEnum) \
 public: \
-    static EResourceType StaticType() \
+    static constexpr EResourceType StaticType() \
     { \
         return EResourceType::ResourceTypeEnum; \
     } \
diff --git a/src/Core/Resource/Script/Property/CStructProperty.h b/src/Core/Resource/Script/Property/CStructProperty.h
index 18824860..de323180 100644
--- a/src/Core/Resource/Script/Property/CStructProperty.h
+++ b/src/Core/Resource/Script/Property/CStructProperty.h
@@ -32,7 +32,7 @@ public:
     void InitFromArchetype(IProperty* pOther) override;
     bool ShouldSerialize() const override;
 
-    static EPropertyType StaticType() { return EPropertyType::Struct; }
+    static constexpr EPropertyType StaticType() { return EPropertyType::Struct; }
 };
 
 #endif
diff --git a/src/Core/Resource/Script/Property/IProperty.h b/src/Core/Resource/Script/Property/IProperty.h
index 5b66584c..53e979ea 100644
--- a/src/Core/Resource/Script/Property/IProperty.h
+++ b/src/Core/Resource/Script/Property/IProperty.h
@@ -361,7 +361,7 @@ public:
         mDefaultValue = kInDefaultValue;
     }
 
-    static EPropertyType StaticType()     { return PropEnum; }
+    static constexpr EPropertyType StaticType()     { return PropEnum; }
 };
 
 template<typename PropType, EPropertyType PropEnum>