diff --git a/lib/base/value.hpp b/lib/base/value.hpp
index 0e3a6123a..bb68acd4b 100644
--- a/lib/base/value.hpp
+++ b/lib/base/value.hpp
@@ -139,7 +139,7 @@ public:
 			return intrusive_ptr<T>();
 
 		if (!IsObject())
-			BOOST_THROW_EXCEPTION(std::runtime_error("Cannot convert value to object."));
+			BOOST_THROW_EXCEPTION(std::runtime_error("Cannot convert value of type '" + GetTypeName() + "' to an object."));
 
 		Object::Ptr object = boost::get<Object::Ptr>(m_Value);