diff --git a/Apollonius_graph_2/demo/Apollonius_graph_2/CMakeLists.txt b/Apollonius_graph_2/demo/Apollonius_graph_2/CMakeLists.txt
new file mode 100644
index 00000000000..55660bbcefe
--- /dev/null
+++ b/Apollonius_graph_2/demo/Apollonius_graph_2/CMakeLists.txt
@@ -0,0 +1,2 @@
+cmake_minimum_required(VERSION 2.6)
+add_subdirectory(Qt3)