--- a/ctorrent/btcontent.cpp
+++ b/ctorrent/btcontent.cpp
@@ -761,6 +761,7 @@ int btContent::NeedFlush() const
             (m_cache_oldest && m_cache_oldest->bc_f_flush &&
              m_cache_used >= cfg_cache_size*1024*1024-cfg_req_slice_size+1)) ?
            1 : 0;
+  return 0;
 }
 
 void btContent::FlushCache()