diff --git a/include/kopper_interface.h b/include/kopper_interface.h
index 1590616f3f0..0f176485f33 100644
--- a/include/kopper_interface.h
+++ b/include/kopper_interface.h
@@ -43,6 +43,9 @@
 #ifdef VK_USE_PLATFORM_WAYLAND_KHR
 #include <vulkan/vulkan_wayland.h>
 #endif
+#ifdef VK_USE_PLATFORM_WIN32_KHR
+#include <vulkan/vulkan_win32.h>
+#endif
 
 typedef struct __DRIkopperExtensionRec          __DRIkopperExtension;
 typedef struct __DRIkopperLoaderExtensionRec    __DRIkopperLoaderExtension;
@@ -84,6 +87,9 @@ struct kopper_loader_info {
 #endif
 #ifdef VK_USE_PLATFORM_WAYLAND_KHR
       VkWaylandSurfaceCreateInfoKHR wl;
+#endif
+#ifdef VK_USE_PLATFORM_WIN32_KHR
+      VkWin32SurfaceCreateInfoKHR win32;
 #endif
    };
    int has_alpha;