diff --git a/core/core-os.el b/core/core-os.el
index 8469faeb8..c1f57ad83 100644
--- a/core/core-os.el
+++ b/core/core-os.el
@@ -39,8 +39,8 @@
              "Inject VARS from your shell environment into Emacs."
              (exec-path-from-shell-copy-envs vars))
            (setq exec-path-from-shell-check-startup-files nil
-                 exec-path-from-shell-arguments (delete "-i" exec-path-from-shell-arguments))
-           (defvaralias 'exec-path-from-shell-debug 'doom-debug-mode)
+                 exec-path-from-shell-arguments (delete "-i" exec-path-from-shell-arguments)
+                 exec-path-from-shell-debug doom-debug-mode)
            (exec-path-from-shell-initialize))))
 
       (IS-LINUX