diff --git a/Service.h b/Service.h
index f884020..cb9e1a0 100644
--- a/Service.h
+++ b/Service.h
@@ -1,9 +1,10 @@
+#pragma once
 #include <string>
 #include "Weather.h"
 
 class Service {
 public:
     virtual ~Service() = default;
-    
+
     virtual Weather getWeather(std::string s) = 0;
 };
diff --git a/XmlService.h b/XmlService.h
index 2219a59..d4aa17d 100644
--- a/XmlService.h
+++ b/XmlService.h
@@ -5,4 +5,4 @@ class XmlService : public Service {
 public:
     virtual Weather getWeather(std::string s) override;
     virtual ~XmlService() {}
-};
\ No newline at end of file
+};