1 files changed, 1 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index c758d39..578bd19 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@
 
 CFLAGS   = -Wall -Wextra -Wpedantic -Werror \
 	   -O3 -march=native -mtune=native -fomit-frame-pointer \
-	   -pipe -D_POSIX_C_SOURCE=200809
+	   -pipe
 PREFIX   = /usr
 DPREFIX  = ${DESTDIR}${PREFIX}
 MANDIR   = ${DPREFIX}/share/man