diff --git a/feeds.py b/feeds.py
index fb993624..42eea04d 100644
--- a/feeds.py
+++ b/feeds.py
@@ -25,11 +25,11 @@ def write(self, s):
         buf = self.buf
         buf.append(s)
         if len(buf) >= 40:
-            self.outfile.write(''.join(buf))
+            self.outfile.write(b''.join(buf))
             self.buf = []
 
     def flush(self):
-        self.outfile.write(''.join(self.buf))
+        self.outfile.write(b''.join(self.buf))
         self.outfile.flush()