diff --git a/setup.py b/setup.py
index c9b1ddece..8020c4e23 100644
--- a/setup.py
+++ b/setup.py
@@ -37,7 +37,7 @@ def build_extension(self, ext):
             if self.parallel:
                 build_args = ['--', '-j' + str(self.parallel)]
             else:
-                build_args = ['--', '-j4']
+                build_args = ['--', '-j1']
 
         if not os.path.exists(self.build_temp):
             os.makedirs(self.build_temp)