diff --git a/ci/scripts/python_wheel_macos_build.sh b/ci/scripts/python_wheel_macos_build.sh
index a9afd9127296..b931dfa4dd23 100755
--- a/ci/scripts/python_wheel_macos_build.sh
+++ b/ci/scripts/python_wheel_macos_build.sh
@@ -33,8 +33,8 @@ rm -rf "${source_dir}"/python/pyarrow/*.so
 rm -rf "${source_dir}"/python/pyarrow/*.so.*
 
 echo "=== (${PYTHON_VERSION}) Set SDK, C++ and Wheel flags ==="
-export _PYTHON_HOST_PLATFORM="macosx-${MACOSX_DEPLOYMENT_TARGET}-${arch}"
 export MACOSX_DEPLOYMENT_TARGET="${MACOSX_DEPLOYMENT_TARGET:-12.0}"
+export _PYTHON_HOST_PLATFORM="macosx-${MACOSX_DEPLOYMENT_TARGET}-${arch}"
 export SDKROOT="${SDKROOT:-$(xcrun --sdk macosx --show-sdk-path)}"
 
 if [ "$arch" = "arm64" ]; then