diff --git a/fastboot/fastboot.cpp b/fastboot/fastboot.cpp
index dc6e698..e438801 100644
--- a/fastboot/fastboot.cpp
+++ b/fastboot/fastboot.cpp
@@ -26,8 +26,6 @@
  * SUCH DAMAGE.
  */
 
-#define _LARGEFILE64_SOURCE
-
 #include <ctype.h>
 #include <errno.h>
 #include <fcntl.h>