diff --git a/server.py b/server.py
index 244fa53..dbd5dc9 100644
--- a/server.py
+++ b/server.py
@@ -83,7 +83,7 @@ class fuwuqi(SimpleHTTPRequestHandler):
         signature = search('signature="(.*?)"', self.headers['Signature']).group(1)
         pubkey.verify(b64decode(signature), message[:-1].encode('utf8'), padding.PKCS1v15(), hashes.SHA256())
 
-        # Make sure activity doer matches HTTP signature 
+        # Make sure activity doer matches HTTP signature
         if ('actor' in activity and activity['actor'] != signer['id']) or \
            ('attributedTo' in activity and activity['attributedTo'] != signer['id']) or \
            ('attributedTo' in activity['object'] and activity['object']['attributedTo'] != signer['id']):