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-rw-r--r--src/systemd/sd-id128.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/systemd/sd-id128.h b/src/systemd/sd-id128.h
index 05521ae4bb..fa17be8434 100644
--- a/src/systemd/sd-id128.h
+++ b/src/systemd/sd-id128.h
@@ -65,6 +65,7 @@ static inline int sd_id128_equal(sd_id128_t a, sd_id128_t b) {
}
#define SD_ID128_NULL ((sd_id128_t) { .qwords = { 0, 0 }})
+#define MESSAGE_ID(x) "MESSAGE_ID=" SD_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(x)
#ifdef __cplusplus
}