diff --git a/ChangeLog b/ChangeLog
index 6197e9d16..6ea441fc5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2008-04-13  Carsten Dominik  <dominik@science.uva.nl>
 
+	* lisp/org-table.el (org-table-make-reference): Extra parenthesis
+	around single fields, to make sure that algebraic formulas get
+	correctly interpreted by calc.
+
 	* lisp/org-mhe.el: Changed author name to Thomas Baumann.
 
 	* lisp/org-exp.el (org-export-preprocess-string): Renamed-from
diff --git a/lisp/org-table.el b/lisp/org-table.el
index 01bad0cae..fc790eaef 100644
--- a/lisp/org-table.el
+++ b/lisp/org-table.el
@@ -2298,7 +2298,8 @@ LISPP means to return something appropriate for a Lisp list."
 	      elements
 	    (prin1-to-string (if numbers (string-to-number elements) elements)))
 	(if (equal elements "") (setq elements "0"))
-	(if numbers (number-to-string (string-to-number elements)) elements))
+	(if numbers (setq elements (number-to-string (string-to-number elements))))
+	(concat "(" elements ")"))
     (unless keep-empty
       (setq elements
 	    (delq nil