--- src/plugins/open/open.c.orig	2016-05-06 14:48:54 UTC
+++ src/plugins/open/open.c
@@ -29,8 +29,6 @@
  * LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
  * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
  */
-#define _POSIX_SOURCE
-
 #include <stdio.h>
 #include <fcntl.h>
 #include <unistd.h>