Index: src/libictranslate/cfg.h
===================================================================
diff -u -N -r3432ca77e8f6d67bf0de4e0dfa36cf89705ae853 -r4fe995b304ea342b50293f92d3c1992b43b820f7
--- src/libictranslate/cfg.h	(.../cfg.h)	(revision 3432ca77e8f6d67bf0de4e0dfa36cf89705ae853)
+++ src/libictranslate/cfg.h	(.../cfg.h)	(revision 4fe995b304ea342b50293f92d3c1992b43b820f7)
@@ -45,7 +45,7 @@
 	property_tracker(const property_tracker& rSrc);				///< Copy constructor
 	~property_tracker();										///< Standard destructor
 
-	property_tracker& operator=(const property_tracker& rSrc);	///< Assignment operator
+	property_tracker& operator=(const property_tracker& rSrc) = delete;	///< Assignment operator
 /**@}*/
 
 /** \name Operations */