diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 0bd5fe0a149..fdcde1dde0f 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,8 @@
+2012-11-18  Jay Belanger  <jay.p.belanger@gmail.com>
+
+	* calc/calc-forms.el (math-date-to-dt): Use integer date when
+	calling `math-date-to-julian-dt' and 'math-date-to-gregorian-dt'.
+
 2012-11-18  Glenn Morris  <rgm@gnu.org>
 
 	* image.el (insert-image, insert-sliced-image): Doc fix.
diff --git a/lisp/calc/calc-forms.el b/lisp/calc/calc-forms.el
index d1df20c697c..709250f9ba9 100644
--- a/lisp/calc/calc-forms.el
+++ b/lisp/calc/calc-forms.el
@@ -443,8 +443,8 @@ in the Gregorian calendar and the remaining part determines the time."
                                    (nth 3 calc-gregorian-switch)
                                    (apply 'math-absolute-from-gregorian-dt calc-gregorian-switch))
 ))
-                 (math-date-to-julian-dt value)
-               (math-date-to-gregorian-dt value))))
+                 (math-date-to-julian-dt date)
+               (math-date-to-gregorian-dt date))))
     (if (math-integerp value)
         dt
       (append dt