diff --git a/modules/lang/data/config.el b/modules/lang/data/config.el
index 06ac206c7..2692fac8c 100644
--- a/modules/lang/data/config.el
+++ b/modules/lang/data/config.el
@@ -38,7 +38,7 @@
   (set-electric! 'json-mode :chars '(?\n ?: ?{ ?})))
 
 (use-package! jsonnet-mode
-  :defer "\\.jsonnet\\'"
+  :defer t
   :config
   (set-electric! 'jsonnet-mode :chars '(?\n ?: ?{ ?})))