diff --git a/ci/scripts/python_wheel_macos_build.sh b/ci/scripts/python_wheel_macos_build.sh
index 551d2151b5bc..8d82e853b6c8 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