diff --git a/scrapy/contrib/downloadermiddleware/robotstxt.py b/scrapy/contrib/downloadermiddleware/robotstxt.py
index 4e634eaa1..b7948a46c 100644
--- a/scrapy/contrib/downloadermiddleware/robotstxt.py
+++ b/scrapy/contrib/downloadermiddleware/robotstxt.py
@@ -18,7 +18,7 @@ from scrapy.core.exceptions import IgnoreRequest
 from scrapy.conf import settings
 
 class RobotsTxtMiddleware(object):
-    DOWNLOAD_PRIORITY = -1
+    DOWNLOAD_PRIORITY = 1000
 
     def __init__(self):
         if not settings.getbool('ROBOTSTXT_OBEY'):
diff --git a/scrapy/contrib/pipeline/media.py b/scrapy/contrib/pipeline/media.py
index a3ab25fc0..02ebe9f82 100644
--- a/scrapy/contrib/pipeline/media.py
+++ b/scrapy/contrib/pipeline/media.py
@@ -10,7 +10,7 @@ from scrapy.spider import spiders
 
 
 class MediaPipeline(object):
-    DOWNLOAD_PRIORITY = -1
+    DOWNLOAD_PRIORITY = 1000
 
     class DomainInfo(object):
         def __init__(self, domain):