diff --git a/roles/fluent-bit/files/fluent-bit.service b/roles/fluent-bit/files/fluent-bit.service
index c2b1b6f..6bbc134 100644
--- a/roles/fluent-bit/files/fluent-bit.service
+++ b/roles/fluent-bit/files/fluent-bit.service
@@ -10,6 +10,7 @@ StartLimitBurst=5
 Type=exec
 ExecStart=/usr/bin/fluent-bit -c /etc/fluent-bit/fluent-bit.yml -Y
 ExecReload=/bin/kill -HUP $MAINPID
+Environment=HOSTNAME=%H
 StateDirectory=fluent-bit
 Restart=always
 RestartSec=1