diff --git a/src/emu/emucore.h b/src/emu/emucore.h
index df5eb2870ce..c26b0423493 100644
--- a/src/emu/emucore.h
+++ b/src/emu/emucore.h
@@ -193,8 +193,8 @@ const endianness_t ENDIANNESS_NATIVE = ENDIANNESS_BIG;
 // macro for defining a copy constructor and assignment operator to prevent copying
 #define DISABLE_COPYING(_Type) \
 private: \
-	_Type(const _Type &); \
-	_Type &operator=(const _Type &)
+	_Type(const _Type &) = delete; \
+	_Type &operator=(const _Type &) = delete
 
 // macro for declaring enumerator operators that increment/decrement like plain old C
 #define DECLARE_ENUM_OPERATORS(_Type) \