diff --git a/modules/lang/rust/config.el b/modules/lang/rust/config.el
index 097649733..5d07f11a8 100644
--- a/modules/lang/rust/config.el
+++ b/modules/lang/rust/config.el
@@ -9,8 +9,15 @@
 ;;; Packages
 
 (use-package! rustic
+  :mode ("\\.rs\\'" . rust-mode)
   :mode ("\\.rs\\'" . rustic-mode)
   :preface
+  ;; HACK: `rust-mode' and `rustic' add entries to `auto-mode-alist', but
+  ;;   package load order makes which gets precedence unpredictable. By removing
+  ;;   them early, we rely on the `:mode' directives above to re-insert them
+  ;;   with the correct order.
+  (setq auto-mode-alist (assoc-delete-all "\\.rs\\'" auto-mode-alist))
+
   ;; HACK `rustic' sets up some things too early. I'd rather disable it and let
   ;;   our respective modules standardize how they're initialized.
   (setq rustic-lsp-client nil)