2 files changed, 3 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index ce1fbf9..c515955 100644
--- a/Makefile
+++ b/Makefile
@@ -5,7 +5,7 @@ MD	:= markdown
 INSTALL	:= install
 RM	:= rm
 CP	:= cp
-CFLAGS	+= -O2 -Wall -Werror
+CFLAGS	+= -std=c11 -O2 -Wall -Werror
 # this is just a fallback in case you do not use git but downloaded
 # a release tarball...
 VERSION := 0.0.8
diff --git a/dyndhcpd.c b/dyndhcpd.c
index 59a197a..16b4941 100644
--- a/dyndhcpd.c
+++ b/dyndhcpd.c
@@ -7,6 +7,8 @@
  * This is an example code skeleton provided by vim-skeleton.
  */
 
+#define _GNU_SOURCE
+
 #include <arpa/inet.h>
 #include <sys/socket.h>
 #include <net/if.h>