diff --git a/README.md b/README.md
index 08a40cb1..be2f9c4e 100644
--- a/README.md
+++ b/README.md
@@ -40,12 +40,12 @@ src
 - Inside `ros2_ws` folder, start building individual packages in the below sequence to avoid errors.
 ```
 $ colcon build --packages-select pipe_msgs
-$ colcon build –packages-select pcl_ros
-$ colcon build –allow-overriding pcl_ros
-$ colcon build –packages-select pcl_conversions
-$ colcon build –allow-overriding pcl_conversions
+$ colcon build --packages-select pcl_ros
+$ colcon build --allow-overriding pcl_ros
+$ colcon build --packages-select pcl_conversions
+$ colcon build --allow-overriding pcl_conversions
 $ colcon build --packages-select find-pose
-$ colcon build –packages-select yolov3_ros
+$ colcon build --packages-select yolov3_ros
 . install/setup.bash
 ```
 - The code should be ready to launch as explained in [How to run Live Detection?](#how-to-run-live-detection)