diff --git a/isometric-park-fna/Simulation.cs b/isometric-park-fna/Simulation.cs
--- a/isometric-park-fna/Simulation.cs
+++ b/isometric-park-fna/Simulation.cs
@@ -400,8 +400,10 @@
 
                 budget.final_money -= construction_amount;
                 budget.construction += construction_amount;
+                budget.cashflow -= construction_amount;
                 this.budgets[this.budgets.Count - 1] = budget;
             }
+            this.money -= construction_amount;
         }
 
         public void updateNews() {