diff --git a/playground/CMakeLists.txt b/playground/CMakeLists.txt
index 86b15fb9..97c9efe1 100644
--- a/playground/CMakeLists.txt
+++ b/playground/CMakeLists.txt
@@ -6,6 +6,7 @@ add_subdirectory(invoker)
 add_subdirectory(shadows)
 add_subdirectory(shapes)
 add_subdirectory(charts)
+add_subdirectory(plots)
 
 if (QT_VERSION_MAJOR VERSION_GREATER 5)
     add_subdirectory(parrots)
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 373a7b72..313e1b93 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -125,7 +125,6 @@ list(APPEND HEADERS
     nodes/QskStrokeNode.h
     nodes/QskStippledLineRenderer.h
     nodes/QskShapeNode.h
-    nodes/QskTreeNode.h
     nodes/QskGradientMaterial.h
     nodes/QskTextNode.h
     nodes/QskTextRenderer.h