diff --git a/ChangeLog b/ChangeLog
index 85cc772e6..281b3780c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -25,6 +25,7 @@
 	* fix uTP edge case where udp socket buffer fills up
 	* fix nagle implementation in uTP
 
+	* fix large file support issue on mingw
 	* add some error handling to set_piece_hashes()
 	* fix completed-on timestamp to not be clobbered on each startup
 	* fix deadlock caused by some UDP tracker failures
diff --git a/src/file.cpp b/src/file.cpp
index 7682e45a4..de7f81f3f 100644
--- a/src/file.cpp
+++ b/src/file.cpp
@@ -34,6 +34,9 @@ POSSIBILITY OF SUCH DAMAGE.
 	Physical file offset patch by Morten Husveit
 */
 
+#define _FILE_OFFSET_BITS 64
+#define _LARGE_FILES 1
+
 #include "libtorrent/pch.hpp"
 #include "libtorrent/config.hpp"
 #include "libtorrent/alloca.hpp"
@@ -68,7 +71,6 @@ POSSIBILITY OF SUCH DAMAGE.
 #else
 // posix part
 
-#define _FILE_OFFSET_BITS 64
 #include <unistd.h>
 #include <fcntl.h> // for F_LOG2PHYS
 #include <sys/types.h>