diff --git a/Dockerfile b/Dockerfile
index 3ac03a1..0a37cf3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -55,7 +55,7 @@ ENV ZAMMAD_URL=https://ticket.z31.it
 ENV ZAMMAD_GROUP=""
 
 HEALTHCHECK --interval=30s --timeout=10s --retries=3 \
-	CMD wget --no-verbose --tries=1 --spider http://localhost/ || exit 1
+	CMD wget --no-verbose --tries=1 --spider http://127.0.0.1/ || exit 1
 
 # Reroute stdout to a new file descriptor so that Lighttpd can use it as the
 # access log. See http.conf and here: