diff --git a/include/libtorrent/disk_buffer_pool.hpp b/include/libtorrent/disk_buffer_pool.hpp
index 017d9b178..c09a9457a 100644
--- a/include/libtorrent/disk_buffer_pool.hpp
+++ b/include/libtorrent/disk_buffer_pool.hpp
@@ -42,6 +42,10 @@ POSSIBILITY OF SUCH DAMAGE.
 #include <boost/pool/pool.hpp>
 #endif
 
+#ifdef TORRENT_DISK_STATS
+#include <fstream>
+#endif
+
 #if defined TORRENT_DEBUG || TORRENT_RELEASE_ASSERTS
 #include <map>
 #endif
diff --git a/src/disk_buffer_pool.cpp b/src/disk_buffer_pool.cpp
index c4fec8326..38f614400 100644
--- a/src/disk_buffer_pool.cpp
+++ b/src/disk_buffer_pool.cpp
@@ -38,6 +38,10 @@ POSSIBILITY OF SUCH DAMAGE.
 #include <sys/mman.h>
 #endif
 
+#ifdef TORRENT_DISK_STATS
+#include "libtorrent/time.hpp"
+#endif
+
 namespace libtorrent
 {
 	disk_buffer_pool::disk_buffer_pool(int block_size)