diff --git a/u01/CMakeLists.txt b/u01/CMakeLists.txt
index 698d992..c7232a6 100644
--- a/u01/CMakeLists.txt
+++ b/u01/CMakeLists.txt
@@ -1,7 +1,9 @@
 cmake_minimum_required(VERSION 3.20)
 project(ecg-u01)
 
-add_library(ecg_tree SHARED node.cpp)
+add_library(tree SHARED node.cpp)
+#                ~~~~~~
+# This can be changed to STATIC to build and link a static library.
 add_executable(main main.cpp)
 target_link_libraries(main ecg_tree)