diff --git a/Dockerfile b/Dockerfile
index 64f19a38..469c70cf 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 FROM debian:stretch-slim
 LABEL maintainer="Thomas VIAL"
 
-ENV DEBIAN_FRONTEND noninteractive
+ARG DEBIAN_FRONTEND=noninteractive
 ENV VIRUSMAILS_DELETE_DELAY=7
 ENV ONE_DIR=0
 ENV ENABLE_POSTGREY=0