diff --git a/src/peer.c b/src/peer.c
index 456049a..da445a1 100644
--- a/src/peer.c
+++ b/src/peer.c
@@ -9,8 +9,6 @@
   See AUTHORS for details
  */
 
-#define _BSD_SOURCE
-
 #include <sys/time.h>
 #include <stdlib.h>
 #include <string.h>