diff --git a/libs/stream/stringstream.h b/libs/stream/stringstream.h
index 06b0e1ae..b6969011 100644
--- a/libs/stream/stringstream.h
+++ b/libs/stream/stringstream.h
@@ -113,10 +113,9 @@ std::size_t write( const char* buffer, std::size_t length ){
 }
 
 template<typename ... Args>
-StringOutputStream& operator()( const Args& ... args ){
+StringOutputStream& operator()( Args&& ... args ){
 	clear();
-	using expander = int[];
-	(void)expander{ 0, ( (void)( *this << args ), 0 ) ... };
+	( *this << ... << std::forward<Args>( args ) );
 	return *this;
 }
 
diff --git a/tools/quake3/common/stringfixedsize.h b/tools/quake3/common/stringfixedsize.h
index f1a19387..1ed59ac9 100644
--- a/tools/quake3/common/stringfixedsize.h
+++ b/tools/quake3/common/stringfixedsize.h
@@ -56,10 +56,9 @@ public:
 	}
 
 	template<typename ... Args>
-	StringFixedSize& operator()( const Args& ... args ){
+	StringFixedSize& operator()( Args&& ... args ){
 		clear();
-		using expander = int[];
-		(void)expander{ 0, ( (void)( *this << args ), 0 ) ... };
+		( *this << ... << std::forward<Args>( args ) );
 		return *this;
 	}