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-rw-r--r--swaybar/bar.c2
-rw-r--r--swaybar/config.c2
-rw-r--r--swaybar/main.c2
3 files changed, 3 insertions, 3 deletions
diff --git a/swaybar/bar.c b/swaybar/bar.c
index 2178f542..47c89a39 100644
--- a/swaybar/bar.c
+++ b/swaybar/bar.c
@@ -1,4 +1,4 @@
-#define _XOPEN_SOURCE 500
+#define _POSIX_C_SOURCE 200809L
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
diff --git a/swaybar/config.c b/swaybar/config.c
index 0ab346b1..16febb2e 100644
--- a/swaybar/config.c
+++ b/swaybar/config.c
@@ -1,4 +1,4 @@
-#define _XOPEN_SOURCE 500
+#define _POSIX_C_SOURCE 200809L
#include <stdlib.h>
#include <string.h>
#include <wlr/util/log.h>
diff --git a/swaybar/main.c b/swaybar/main.c
index 2672abef..06238c62 100644
--- a/swaybar/main.c
+++ b/swaybar/main.c
@@ -1,4 +1,4 @@
-#define _XOPEN_SOURCE 500
+#define _POSIX_C_SOURCE 200809L
#include <stdio.h>
#include <stdlib.h>
#include <string.h>