diff --git a/setup.py b/setup.py
index d7d4a88..ef49af8 100644
--- a/setup.py
+++ b/setup.py
@@ -44,7 +44,7 @@ class libuv_build_ext(build_ext):
         if not re.search('-O\d', cur_cflags):
             cur_cflags += ' -O2'
 
-        env['CFLAGS'] = (cur_cflags + ' -fPIC' + env.get('ARCHFLAGS', ''))
+        env['CFLAGS'] = (cur_cflags + ' -fPIC ' + env.get('ARCHFLAGS', ''))
 
         j_flag = '-j{}'.format(os.cpu_count() or 1)