diff --git a/docker/services/tinc b/docker/services/tinc
index 3d8e5ff..bfda8b0 100644
--- a/docker/services/tinc
+++ b/docker/services/tinc
@@ -14,7 +14,7 @@
     restart: always
     networks:
       internal:
-        ipv4_address: ${internal_address}
+{{ if len "${internal_address:-}" }}        ipv4_address: ${internal_address}{{ end }}
     sysctls:
 {{ if ne "true" "${ipv6_enabled}" }}
       - net.ipv6.conf.all.disable_ipv6=1