diff --git a/files/Dockerfile b/files/Dockerfile
index 4216b4d..546a48b 100644
--- a/files/Dockerfile
+++ b/files/Dockerfile
@@ -55,4 +55,4 @@ VOLUME /etc/dovecot /ssl /vmail
 
 EXPOSE 110/tcp 143/tcp 587/tcp 993/tcp 995/tcp 2000/tcp
 
-CMD dovecot -F
+CMD ["dovecot","-F"]