2 files changed, 2 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index b24625d..9fe729c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,3 @@
-CPPFLAGS = -D_GNU_SOURCE
 CFLAGS = -Wall -Wextra -Werror -ggdb3 -O3
 LDFLAGS = -lasound -lm -lrt
 
diff --git a/metronome.c b/metronome.c
index 7515452..36836d5 100644
--- a/metronome.c
+++ b/metronome.c
@@ -1,3 +1,5 @@
+#define _GNU_SOURCE
+
 #include <stdio.h>
 #include <stdint.h>
 #include <stdlib.h>