diff --git a/src/vkcv/CoreManager.cpp b/src/vkcv/CoreManager.cpp
index 7205e81ec05c5ee4d50ed6e3cf16a049fce9d921..cf8f11d61fde5f6adbe932b07fb22580bc84b017 100644
--- a/src/vkcv/CoreManager.cpp
+++ b/src/vkcv/CoreManager.cpp
@@ -1,4 +1,3 @@
-#define GLFW_INCLUDE_VULKAN
 
 #include "CoreManager.hpp"
 
@@ -24,4 +23,4 @@ namespace vkcv {
         }
         glfwCounter--;
     }
-}
\ No newline at end of file
+}
diff --git a/src/vkcv/CoreManager.hpp b/src/vkcv/CoreManager.hpp
index 9e874310792ec6ba27510f1a9d57fcdc8cc57a9a..2485ce00be505a1f0745ff856c51facaf60683a1 100644
--- a/src/vkcv/CoreManager.hpp
+++ b/src/vkcv/CoreManager.hpp
@@ -1,5 +1,4 @@
-#ifndef VKCV_COREMANAGER_HPP
-#define VKCV_COREMANAGER_HPP
+#pragma once
 
 #include <GLFW/glfw3.h>
 #include <stdexcept>
@@ -15,5 +14,3 @@ namespace vkcv {
      */
     void terminateGLFW();
 }
-
-#endif //VKCV_COREMANAGER_HPP