diff --git a/setup.py b/setup.py
index bc35e00940d..873a333ca71 100644
--- a/setup.py
+++ b/setup.py
@@ -408,7 +408,7 @@ def detect_modules(self):
         # These represent audio samples or images as strings:
 
         # Operations on audio samples
-        # According to #993173, this one should actually work fine on 
+        # According to #993173, this one should actually work fine on
         # 64-bit platforms.
         exts.append( Extension('audioop', ['audioop.c']) )