diff --git a/requests/models.py b/requests/models.py
index ba70e3a6..11434ef4 100644
--- a/requests/models.py
+++ b/requests/models.py
@@ -868,6 +868,6 @@ class Response(object):
         *Note: Should not normally need to be called explicitly.*
         """
         if not self._content_consumed:
-            return self.raw.close()
+            self.raw.close()
 
         return self.raw.release_conn()