diff --git a/pyext/setup.py.in b/pyext/setup.py.in
index d36bfca..f5052e6 100644
--- a/pyext/setup.py.in
+++ b/pyext/setup.py.in
@@ -14,8 +14,7 @@ def remove_prefixes(optlist, bad_prefixes):
 	return optlist
 
 # Adjust compile options for darwin
-#if sys.platform.lower().startswith("darwin"):
-if 0 == 1:
+if sys.platform.lower().startswith("darwin"):
 
 	# Remove some time consuming options
 	cvars = sysconfig.get_config_vars()