diff --git a/BUILD_macos.md b/BUILD_macos.md
index 5dfc4d5a45a..283499bc2bf 100644
--- a/BUILD_macos.md
+++ b/BUILD_macos.md
@@ -89,7 +89,8 @@ To run a full test suite locally, you will need
   tar xzvf bats.tar.gz
   sudo mkdir /usr/local/libexec
   sudo chown $USER /usr/local/libexec
-  ./install.sh /usr/local
+  cd bats-core-1.2.1
+  sudo ./install.sh /usr/local
   cd ../
   rm -rf bats-core-1.2.1 bats.tar.gz
   ```
@@ -111,4 +112,4 @@ To run a full test suite locally, you will need
   
   ```shell
   ulimit -n 2560 # 10x default
-  ```
\ No newline at end of file
+  ```