diff --git a/Dockerfile b/Dockerfile
index c0a0dc3..82bc5f5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,5 +16,5 @@ ENV LOCALPORT="80"
 ENV DEST="box.imzadi.de:23"
 ENV OPTS="--web /data"
 
-ENTRYPOINT ["/usr/local/bin/websockify", "$LOCALPORT $DEST $OPTS"]
+ENTRYPOINT ["/usr/local/bin/websockify", "$LOCALPORT", "$DEST", "$OPTS"]