diff --git a/src/vk_convert.hpp b/src/vk_convert.hpp
index 6d0be7d..0e253ae 100644
--- a/src/vk_convert.hpp
+++ b/src/vk_convert.hpp
@@ -1,3 +1,5 @@
+#pragma once
+
 #define VULKAN_HPP_NO_CONSTRUCTORS
 #include <vulkan/vulkan.hpp>
 #include <string>