diff --git a/Duplication/WeatherReport.cs b/Duplication/WeatherReport.cs
index 14bae89..f5544fd 100644
--- a/Duplication/WeatherReport.cs
+++ b/Duplication/WeatherReport.cs
@@ -2,6 +2,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 
 public class WeatherReport
 {
@@ -9,7 +10,7 @@ public void FormatDailyReport(List<Forecast> forecasts, List<string> output)
     {
         foreach (Forecast forecast in forecasts)
         {
-            string temperature = forecast.GetTemperature().ToString("0.0");
+            string temperature = forecast.GetTemperature().ToString("0.0", CultureInfo.InvariantCulture);
 
             if (forecast.IsMorning())
             {
@@ -91,4 +92,4 @@ public bool IsNight()
     {
         return period == "night";
     }
-}
\ No newline at end of file
+}