diff --git a/Utilities/config_context.h b/Utilities/config_context.h
index fcbcfb17d7..169568038f 100644
--- a/Utilities/config_context.h
+++ b/Utilities/config_context.h
@@ -94,7 +94,7 @@ public:
 			value(convert::to<T>(new_value));
 		}
 
-		void value_from(const entry_base* rhs)
+		void value_from(const entry_base* rhs) override
 		{
 			value(static_cast<const entry*>(rhs)->value());
 		}
@@ -125,4 +125,4 @@ public:
 	void set_defaults();
 
 	std::string to_string() const;
-};
\ No newline at end of file
+};