diff --git a/src/calibre/srv/utils.py b/src/calibre/srv/utils.py
index 5b802656e9..b2a201d2bb 100644
--- a/src/calibre/srv/utils.py
+++ b/src/calibre/srv/utils.py
@@ -347,7 +347,7 @@ def rename(self, src, dest):
                 raise
 
     def rollover(self):
-        if self.max_size is None or self.current_pos <= self.max_size:
+        if self.max_size is None or self.current_pos <= self.max_size or self.filename in ('/dev/stdout', '/dev/stderr'):
             return
         self.stream.close()
         for i in xrange(self.history - 1, 0, -1):