diff --git a/wired/network.c b/wired/network.c
index 74edf68c..d96d8654 100644
--- a/wired/network.c
+++ b/wired/network.c
@@ -24,9 +24,9 @@
 #include <config.h>
 #endif
 
+#define _GNU_SOURCE
 #include <errno.h>
 #include <dirent.h>
-#include <errno.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <ell/ell.h>