diff --git a/uppsrc/Skylark/Http.h b/uppsrc/Skylark/Http.h
index 808b2ef29..303e067e3 100644
--- a/uppsrc/Skylark/Http.h
+++ b/uppsrc/Skylark/Http.h
@@ -21,9 +21,9 @@ protected:
 	friend String GetIdentity(const Renderer *r);
 
 public:	
-	Renderer& operator()(const char *id, const char *v)   { var.Add(id, v); return *this; }
-	Renderer& operator()(const char *id, const String& v) { var.Add(id, v); return *this; }
-	Renderer& operator()(const char *id, const Value& v)  { var.Add(id, v); return *this; }
+	Renderer& operator()(const char *id, const char *v)   { var.GetAdd(id) = v; return *this; }
+	Renderer& operator()(const char *id, const String& v) { var.GetAdd(id) = v; return *this; }
+	Renderer& operator()(const char *id, const Value& v)  { var.GetAdd(id) = v; return *this; }
 	Renderer& operator()(const ValueMap& map);
 	Renderer& operator()(const char *id, const HandlerId& handler);
 	Renderer& operator()(const char *id, const HandlerId& handler, const Value& arg1);
diff --git a/uppsrc/Skylark/Renderer.cpp b/uppsrc/Skylark/Renderer.cpp
index 77c686c5b..39df54cbd 100644
--- a/uppsrc/Skylark/Renderer.cpp
+++ b/uppsrc/Skylark/Renderer.cpp
@@ -10,13 +10,13 @@ Renderer& Renderer::operator()(const ValueMap& map)
 	ValueArray v = map.GetValues();
 	const Index<Value>& k = map.GetKeys();
 	for(int i = 0; i < map.GetCount(); i++)
-		var.Add(k[i], v[i]);
+		var.GetAdd(k[i]) = v[i];
 	return *this;
 }
 
 Renderer& Renderer::Link(const char *id, const HandlerId& handler, const Vector<Value>& arg)
 {
-	var.Add(id, Raw('\"' + MakeLink(handler, arg) + '\"'));
+	var.GetAdd(id) = Raw('\"' + MakeLink(handler, arg) + '\"');
 	return *this;
 }