diff --git a/Engine/source/CMakeLists.txt b/Engine/source/CMakeLists.txt
index b69050644..4abb173ea 100644
--- a/Engine/source/CMakeLists.txt
+++ b/Engine/source/CMakeLists.txt
@@ -130,6 +130,12 @@ torqueAddSourceDirectories("module")
 
 # Handle forest
 torqueAddSourceDirectories("forest" "forest/ts")
+if(TORQUE_OPENGL)
+  torqueAddSourceDirectories("forest" "forest/glsl")
+endif(TORQUE_OPENGL)
+if(TORQUE_D3D11)
+  torqueAddSourceDirectories("forest" "forest/hlsl")
+endif(TORQUE_OPENGL)
 
 # Handle shadergen
 torqueAddSourceDirectories("shaderGen")