diff --git a/lisp/ox.el b/lisp/ox.el
index 7dad90857..8c68cdac4 100644
--- a/lisp/ox.el
+++ b/lisp/ox.el
@@ -4523,7 +4523,7 @@ Possible values are `left', `right' and `center'."
 	 (cache (or (plist-get info :table-cell-alignment-cache)
 		    (plist-get (setq info
 				     (plist-put info :table-cell-alignment-cache
-						(make-hash-table :test 'equal)))
+						(make-hash-table :test 'eq)))
 			       :table-cell-alignment-cache)))
 	 (align-vector (or (gethash table cache)
 			   (puthash table (make-vector columns nil) cache))))