diff --git a/src/Vulkan/BUILD.gn b/src/Vulkan/BUILD.gn
index 3e33cd7..c2e63d6 100644
--- a/src/Vulkan/BUILD.gn
+++ b/src/Vulkan/BUILD.gn
@@ -20,6 +20,7 @@
   if (is_linux) {
     defines = [
       "VK_USE_PLATFORM_XLIB_KHR",
+      "VK_USE_PLATFORM_XCB_KHR",
       "VK_EXPORT=__attribute__((visibility(\"default\")))",
     ]
   } else if (is_fuchsia) {
diff --git a/src/WSI/BUILD.gn b/src/WSI/BUILD.gn
index 2ea3ad2..10d2b8d 100644
--- a/src/WSI/BUILD.gn
+++ b/src/WSI/BUILD.gn
@@ -24,6 +24,8 @@
 
   if (is_linux) {
     sources += [
+      "XcbSurfaceKHR.cpp",
+      "XcbSurfaceKHR.hpp",
       "XlibSurfaceKHR.cpp",
       "XlibSurfaceKHR.hpp",
       "libX11.cpp",