diff --git a/.dir-locals.el b/.dir-locals.el
index 346c78e..1840735 100644
--- a/.dir-locals.el
+++ b/.dir-locals.el
@@ -1,3 +1,4 @@
 ((cperl-mode . ((dumb-jump-force-searcher . rg)
                 (cperl-indent-level . 4)
+                (indent-tabs-mode . nil)
                 (eval . (auto-fill-mode -1)))))