diff --git a/Dockerfile b/Dockerfile
index cfbb63300..1f65f6c27 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -51,7 +51,7 @@ LABEL maintainer="maintainers@vikunja.io"
 ENV VIKUNJA_HTTP_PORT 80
 ENV VIKUNJA_HTTP2_PORT 81
 ENV VIKUNJA_LOG_FORMAT main
-ENV VIKUNJA_API_URL http://localhost:3456/api/v1
+ENV VIKUNJA_API_URL /api/v1
 ENV VIKUNJA_SENTRY_ENABLED false
 ENV VIKUNJA_SENTRY_DSN https://85694a2d757547cbbc90cd4b55c5a18d@o1047380.ingest.sentry.io/6024480