1 files changed, 0 insertions, 2 deletions
diff --git a/src/port.c b/src/port.c
index c143b31..1a8ffaf 100644
--- a/src/port.c
+++ b/src/port.c
@@ -14,8 +14,6 @@
   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
 
-#define _XOPEN_SOURCE 500
-
 #include <assert.h>
 #include <limits.h>
 #include <stdio.h>