diff --git a/setup.py b/setup.py
index 55df4deffa0..1c1ec13cddc 100644
--- a/setup.py
+++ b/setup.py
@@ -174,7 +174,7 @@ def detect_modules(self):
         exts.append( Extension('operator', ['operator.c']) )
         # access to the builtin codecs and codec registry
         exts.append( Extension('_codecs', ['_codecsmodule.c']) )
-	# Python C API test module
+        # Python C API test module
         exts.append( Extension('_test', ['_testmodule.c']) )
         # static Unicode character database
         exts.append( Extension('unicodedata', ['unicodedata.c']) )