diff --git a/include/libtorrent/disk_buffer_pool.hpp b/include/libtorrent/disk_buffer_pool.hpp
index 716b5ab72..7cc605f27 100644
--- a/include/libtorrent/disk_buffer_pool.hpp
+++ b/include/libtorrent/disk_buffer_pool.hpp
@@ -48,7 +48,7 @@ POSSIBILITY OF SUCH DAMAGE.
 #include <fstream>
 #endif
 
-#if defined TORRENT_DEBUG || TORRENT_RELEASE_ASSERTS
+#if defined TORRENT_DEBUG || TORRENT_RELEASE_ASSERTS || TORRENT_DISK_STATS
 #include <map>
 #endif