diff --git a/action.js b/action.js
index a0eb963e..54dcba8f 100644
--- a/action.js
+++ b/action.js
@@ -10,7 +10,7 @@ try {
   // we build to /opt and special case this action so people new to
   // building aren’t immediatelyt flumoxed
   if (PREFIX == '/opt' && os.platform == 'darwin') {
-    execSync('sudo chown -R $(whoami):staff /opt')
+    execSync('sudo chown $(whoami):staff /opt')
   }
 
   let out = execSync(`${__dirname}/install.sh`, {