1 files changed, 2 insertions, 2 deletions

diff --git a/Makefile b/Makefile
index ea603bc..ae88261 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 VERSION=0.2
 
-CPPFLAGS=-DVERSION=\"${VERSION}\"
-CFLAGS+=-Wall -Wextra -g -O3 -pedantic
+CPPFLAGS=-DVERSION=\"${VERSION}\" -D_GNU_SOURCE
+CFLAGS+=-Wall -Wextra -g -std=c99 -O3 -pedantic
 PREFIX?=/usr/local
 MANDIR?=$(PREFIX)/share/man
 BINDIR?=$(PREFIX)/bin