diff --git a/roles/mailman/templates/settings.py.j2 b/roles/mailman/templates/settings.py.j2
index 3aa79e95c5..c94011b41a 100644
--- a/roles/mailman/templates/settings.py.j2
+++ b/roles/mailman/templates/settings.py.j2
@@ -275,8 +275,8 @@ GRAVATAR_DEFAULT_SECURE = True
 #
 COMPRESS_PRECOMPILERS = (
    ('text/less', 'lessc {infile} {outfile}'),
-   ('text/x-scss', 'sassc {infile} {outfile}'),
-   ('text/x-sass', 'sassc {infile} {outfile}'),
+   ('text/x-scss', 'sassc -t compressed {infile} {outfile}'),
+   ('text/x-sass', 'sassc -t compressed {infile} {outfile}'),
 )
 COMPRESS_OFFLINE = True
 # needed for debug mode