diff --git a/src/session.cpp b/src/session.cpp
index 152a0a74f..d7d88c9c1 100644
--- a/src/session.cpp
+++ b/src/session.cpp
@@ -196,7 +196,7 @@ namespace libtorrent
 		// use 512 MB of cache
 		set.cache_size = 32768;
 		set.use_read_cache = true;
-		set.cache_buffer_chunk_size = 64;
+		set.cache_buffer_chunk_size = 128;
 		// one hour expiration
 		set.cache_expiry = 60 * 60;