diff --git a/src/session_impl.cpp b/src/session_impl.cpp
index b57e69169..0ec6eb28d 100644
--- a/src/session_impl.cpp
+++ b/src/session_impl.cpp
@@ -2777,10 +2777,14 @@ namespace aux {
 			{
 				if (prev != end)
 				{
+					boost::shared_ptr<torrent> t1 = (*prev)->associated_torrent().lock();
+					TORRENT_ASSERT(t1);
+					boost::shared_ptr<torrent> t2 = (*i)->associated_torrent().lock();
+					TORRENT_ASSERT(t2);
 					TORRENT_ASSERT((*prev)->uploaded_since_unchoke() * 1000
-						/ total_milliseconds(unchoke_interval)
+						/ total_milliseconds(unchoke_interval) * t1->priority()
 						>= (*i)->uploaded_since_unchoke() * 1000
-						/ total_milliseconds(unchoke_interval));
+						/ total_milliseconds(unchoke_interval) * t2->priority());
 				}
 				prev = i;
 			}