diff --git a/pool-server.go b/pool-server.go
index 421d751..29f8180 100644
--- a/pool-server.go
+++ b/pool-server.go
@@ -34,7 +34,7 @@ func (s *PoolServer) HandleAddSku(w http.ResponseWriter, r *http.Request) error
 	sku := r.PathValue("sku")
 	data, err := s.pool.Process(ToCartId(id), Message{
 		Type:    AddRequestType,
-		Content: &messages.AddRequest{Sku: sku},
+		Content: &messages.AddRequest{Sku: sku, Quantity: 1},
 	})
 	if err != nil {
 		return err