diff --git a/README.md b/README.md
index a23fea7..56a4dba 100644
--- a/README.md
+++ b/README.md
@@ -50,7 +50,7 @@ source devel/setup.bash
 # install ranger_ros
 git clone https://github.com/westonrobot/ranger_ros.git
 cd ranger_ros/ranger_base/ascent
-mkdir -p build && cd build && sudo make install
+mkdir -p build && cd build && cmake .. && sudo make install
 cd ~/agilex_ws/
 catkin_make install