diff --git a/src/nlohmann/json-schema.hpp b/src/nlohmann/json-schema.hpp
index 63f8e10..518a0c7 100644
--- a/src/nlohmann/json-schema.hpp
+++ b/src/nlohmann/json-schema.hpp
@@ -176,6 +176,9 @@ public:
 	json_validator(json_validator &&);
 	json_validator &operator=(json_validator &&);
 
+	json_validator(json_validator const &) = delete;
+	json_validator &operator=(json_validator const &) = delete;
+
 	~json_validator();
 
 	// insert and set the root-schema