diff --git a/fg42-config.el b/fg42-config.el
index a1d6f66..3fd01cd 100644
--- a/fg42-config.el
+++ b/fg42-config.el
@@ -31,11 +31,13 @@
 
 (setq tab-width 2)
 
-(setq custom-file (format "%s/.fg42.custom.el" (getenv "HOME")))
-(setq user-emacs-directory "~/.fg42/emacs.d")
-(setq user-init-file
-      (format "%s/.fg42.el"
-              (getenv "HOME")))
+(let ((emacsd (or (getenv "FG42_EMACSD") "~/.fg42/emacs.d")))
+  (setq custom-file (format "%s/.fg42.custom.el" emacsd))
+  (setq user-emacs-directory emacsd)
+  (setq user-init-file
+        (or (getenv "FG42_CONFIG_FILE")
+            (format "%s/.fg42.el"
+                    (getenv "HOME"))))))
 
 
 ;; Load the customization file. In FG42 it is different than