diff --git a/doc/getting_started/installation_mac.rst b/doc/getting_started/installation_mac.rst
index cadb7718053..14fdb3d44cd 100644
--- a/doc/getting_started/installation_mac.rst
+++ b/doc/getting_started/installation_mac.rst
@@ -172,9 +172,7 @@ and use the target location where the toolchain was installed, type:
 
    $ export ZEPHYR_GCC_VARIANT=xtools
 
-   $ export ZEPHYR_SDK_INSTALL_DIR=/Volumes/CrossToolNG/x-tools
-
-   $ export XTOOLS_TOOLCHAIN_PATH=$ZEPHYR_SDK_INSTALL_DIR
+   $ export XTOOLS_TOOLCHAIN_PATH=/Volumes/CrossToolNG/x-tools
 
 
 To use the same toolchain in new sessions in the future you can set the
@@ -183,7 +181,7 @@ variables in the file :file:`${HOME}/.zephyrrc`, for example:
 .. code-block:: console
 
    $ cat <<EOF > ~/.zephyrrc
-   export ZEPHYR_SDK_INSTALL_DIR=/Volumes/CrossToolNG/x-tools
+   export XTOOLS_TOOLCHAIN_PATH=/Volumes/CrossToolNG/x-tools
    export ZEPHYR_GCC_VARIANT=xtools
    EOF