diff --git a/engine.build.lua b/engine.build.lua
index c63b6e7..25dcff9 100644
--- a/engine.build.lua
+++ b/engine.build.lua
@@ -136,6 +136,10 @@ local graphics_module = Module("source/Graphics", {
 	"GL/CheckError.cpp",
 })
 
+local gfxdrv_opengl_module = Module("source/GfxDriver/OpenGL", {
+    "OpenGLDrv.cpp"
+})
+
 local core_module = Module("source/Core", {
 	"String.cpp"
 })
@@ -174,6 +178,7 @@ local obj = Compile(settings, {
 	input_module,
 	display_module,
 	graphics_module,
+	gfxdrv_opengl_module,
 	core_module,
 	math_module,
 	game_module,