diff --git a/CMakeLists.txt b/CMakeLists.txt
index f53843ac..16cb2202 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,6 +5,7 @@ cmake_minimum_required(VERSION 3.10)
 project(randomgen VERSION 0.1)
 enable_language(CXX)
 
+include(xo_macros/xo_cxx)
 include(cmake/cxx.cmake)
 include(cmake/code-coverage.cmake)
 
diff --git a/README.md b/README.md
index 18300542..905f267e 100644
--- a/README.md
+++ b/README.md
@@ -6,11 +6,7 @@
 $ cd randomgen
 $ mkdir build
 $ cd build
-$ cmake -DCMAKE_PREFIX_PATH=$(HOME)/local ..
+$ cmake -DCMAKE_MODULE_PATH=${INSTALL_PREFIX}/share/cmake  -DCMAKE_PREFIX_PATH=$(INSTALL_PREFIX) ..
 $ make
 $ make install
 ```
-
-# to build + install to /usr/local (deprecated)
-
-same as above,  but set `CMAKE_PREFIX_PATH` to `/usr/local`