diff --git a/stepmania/src/XmlFile.h b/stepmania/src/XmlFile.h
index 50d9ea418b..77ec3ebeba 100644
--- a/stepmania/src/XmlFile.h
+++ b/stepmania/src/XmlFile.h
@@ -106,7 +106,7 @@ public:
 	void Clear();
 
 private:
-	XNode &operator=( const XNode &cpy ) { } // don't use
+	XNode &operator=( const XNode &cpy ); // don't use
 };
 
 #endif