diff --git a/setup.py b/setup.py
index 73c39a88ed20d384ec02438e9c476722804c9389..74686de0aad849489bf635945a12783beaf7e901 100644
--- a/setup.py
+++ b/setup.py
@@ -61,7 +61,7 @@ class CMakeBuild(build_ext):
             build_args += ['--', '/m']
         else:
             cmake_args += ['-DCMAKE_BUILD_TYPE=' + cfg]
-            build_args += ['--', '-j2']
+            build_args += ['--', '-j1']
 
         env = os.environ.copy()
         env['CXXFLAGS'] = '{} -DVERSION_INFO=\\"{}\\"'.format(