diff --git a/Makefiles/Rules.inc b/Makefiles/Rules.inc
index 3ce1941..80facbb 100644
--- a/Makefiles/Rules.inc
+++ b/Makefiles/Rules.inc
@@ -114,6 +114,7 @@ SRC_FILES = \
 	Src/Graphics/New3D/R3DShader.cpp \
 	Src/Graphics/New3D/R3DFloat.cpp \
 	Src/Graphics/New3D/R3DScrollFog.cpp \
+	Src/Graphics/FBO.cpp \
 	Src/Graphics/Render2D.cpp \
 	Src/Model3/TileGen.cpp \
 	Src/Model3/Model3.cpp \