diff --git a/scrapy/core/downloader/handlers/http11.py b/scrapy/core/downloader/handlers/http11.py
index 0a5538947..4e1bb0cd5 100644
--- a/scrapy/core/downloader/handlers/http11.py
+++ b/scrapy/core/downloader/handlers/http11.py
@@ -344,7 +344,7 @@ class ScrapyAgent(object):
 
         if warnsize and expected_size > warnsize:
             logger.warning("Expected response size (%(size)s) larger than "
-                           "download warn size (%(warnsize)s) in request (%(request)s).",
+                           "download warn size (%(warnsize)s) in request %(request)s.",
                            {'size': expected_size, 'warnsize': warnsize, 'request': request})
 
         def _cancel(_):