diff --git a/lisp/progmodes/sh-script.el b/lisp/progmodes/sh-script.el
index fbcdf5c8dbc..3cc905bd9fe 100644
--- a/lisp/progmodes/sh-script.el
+++ b/lisp/progmodes/sh-script.el
@@ -90,7 +90,7 @@ sh		Bourne Shell
 
 
 (defvar sh-alias-alist
-  (nconc (if (eq system-type 'lignux)
+  (nconc (if (eq system-type 'gnu/linux)
 	     '((csh . tcsh)
 	       (ksh . pdksh)))
 	 ;; for the time being