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-rw-r--r--sway/criteria.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sway/criteria.c b/sway/criteria.c
index 3393852c..54583b04 100644
--- a/sway/criteria.c
+++ b/sway/criteria.c
@@ -1,4 +1,4 @@
-#define _XOPEN_SOURCE 700
+#define _POSIX_C_SOURCE 200809L
#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>