diff --git a/BUILD.md b/BUILD.md
index 6346ff3..acc61e8 100644
--- a/BUILD.md
+++ b/BUILD.md
@@ -69,8 +69,7 @@ poetry run ./install/macos/build_app.py
 If you want to build for distribution, you'll need a codesigning certificate, and you'll also need to have [create-dmg](https://github.com/sindresorhus/create-dmg) installed:
 
 ```sh
-npm install --global create-dmg
-brew install graphicsmagick imagemagick
+brew install create-dmg graphicsmagick imagemagick
 ```
 
 And then run `build_app.py --with-codesign`:
diff --git a/install/macos/build_app.py b/install/macos/build_app.py
old mode 100755
new mode 100644
index df336da..93d2e13
--- a/install/macos/build_app.py
+++ b/install/macos/build_app.py
@@ -32,6 +32,7 @@ def main():
     build_path = os.path.join(root, "build")
     dist_path = os.path.join(root, "dist")
     app_path = os.path.join(dist_path, "Dangerzone.app")
+    dmg_path = os.path.join(dist_path, "Dangerzone.dmg")
 
     print("○ Deleting old build and dist")
     if os.path.exists(build_path):
@@ -76,12 +77,9 @@ def main():
             return
 
         print("○ Creating DMG")
-        run(["create-dmg", app_path, "--identity", identity_name_application])
-        dmg_filename = glob.glob(f"{root}/*.dmg")[0]
-        shutil.move(dmg_filename, dist_path)
-        dmg_filename = glob.glob(f"{dist_path}/*.dmg")[0]
+        run(["create-dmg", dmg_path, app_path, "--identity", identity_name_application])
 
-        print(f"○ Finished building DMG: {dmg_filename}")
+        print(f"○ Finished building DMG: {dmg_path}")
 
     else:
         print("○ Skipping code signing")