diff --git a/README.md b/README.md
index aa961117a..4825685df 100644
--- a/README.md
+++ b/README.md
@@ -65,7 +65,14 @@ git clone https://github.com/ArduPilot/apm_planner.git
 cd apm_planner
 mkdir build
 cd build
-cmake cmake -G Ninja .. -DCMAKE_PREFIX_PATH="/opt/homebrew/Cellar/qt@5/5.15.16_2;/opt/homebrew"
+cmake -G Ninja .. -DCMAKE_PREFIX_PATH="$(brew --prefix qt@5);$(brew --prefix)"
+ninja
+```
+
+Once the build finishes, the app bundle is created in the `build` directory. Launch it with:
+
+```
+open apmplanner2.app
 ```