diff --git a/scrapy/trunk/scrapy/contrib/adaptors/extraction.py b/scrapy/trunk/scrapy/contrib/adaptors/extraction.py
index b626234f2..a014562fb 100644
--- a/scrapy/trunk/scrapy/contrib/adaptors/extraction.py
+++ b/scrapy/trunk/scrapy/contrib/adaptors/extraction.py
@@ -94,7 +94,9 @@ class ExtractImages(object):
         return ret
 
     def __call__(self, locations):
-        if isinstance(locations, basestring):
+        if not locations:
+            return []
+        elif isinstance(locations, basestring):
             locations = [locations]
 
         rel_urls = []