diff --git a/setup.py b/setup.py
index ae51b1da..c185b8c8 100644
--- a/setup.py
+++ b/setup.py
@@ -67,7 +67,7 @@ def build_extension(self, ext):
             # if sys.maxsize > 2**32:
                 # cmake_args += ['-A', 'x64']
             # cmake_args += ['-T', 'llvm']
-            build_args += ['--', '/m']
+            # build_args += ['--', '/m']
         else:
             build_args += ['--', '-j2']