diff --git a/lib/Bindings/Python/setup.py b/lib/Bindings/Python/setup.py
index ee21331c0279..c160702b97c8 100644
--- a/lib/Bindings/Python/setup.py
+++ b/lib/Bindings/Python/setup.py
@@ -75,10 +75,10 @@ def run(self):
     cmake_args = [
         "-DCMAKE_BUILD_TYPE=Release",  # not used on MSVC, but no harm
         "-DCMAKE_INSTALL_PREFIX={}".format(os.path.abspath(cmake_install_dir)),
-      # Use the minimum macOS deployment target that supports all c++17
-      # features.
-      #
-      # See: Notes column of https://developer.apple.com/xcode/cpp/#c++17
+        # Use the minimum macOS deployment target that supports all c++17
+        # features.
+        #
+        # See: Notes column of https://developer.apple.com/xcode/cpp/#c++17
         "-DCMAKE_OSX_DEPLOYMENT_TARGET=10.15",
         "-DPython3_EXECUTABLE={}".format(sys.executable.replace("\\", "/")),
         "-DLLVM_ENABLE_PROJECTS=mlir",