diff --git a/engine.build.lua b/engine.build.lua
index 18fe860..3493812 100644
--- a/engine.build.lua
+++ b/engine.build.lua
@@ -135,6 +135,10 @@ local graphics_module = Module("source/Graphics", {
     "Graphics.cpp",
 })
 
+local gfxdrv_module = Module("source/GfxDriver", {
+    "ShaderProgram.cpp",
+})
+
 local gfxdrv_opengl_module = Module("source/GfxDriver/OpenGL", {
     "OpenGLDrv.cpp"
 })
@@ -177,6 +181,7 @@ local obj = Compile(settings, {
 	input_module,
 	display_module,
 	graphics_module,
+    gfxdrv_module,
 	gfxdrv_opengl_module,
 	core_module,
 	math_module,