diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index dcce8acda17..9d2089c842e 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,8 @@
+2008-08-25  Jay Belanger  <jay.p.belanger@gmail.com>
+
+	* calc/calc-units.el (math-simplify-units-quotient): Replace
+	missing exponent.
+
 2008-08-24  Romain Francoise  <romain@orebokech.com>
 
 	* progmodes/python.el (run-python): Remove '' from sys.path.
diff --git a/lisp/calc/calc-units.el b/lisp/calc/calc-units.el
index f648a37cb7f..e3da2ebd997 100644
--- a/lisp/calc/calc-units.el
+++ b/lisp/calc/calc-units.el
@@ -1138,7 +1138,9 @@ Entries are (SYMBOL EXPR DOC-STRING TEMP-TYPE BASE-UNITS).")
       (and un ud
 	   (if (and (equal (nth 4 un) (nth 4 ud))
 		    (eq pow1 pow2))
-	       (math-to-standard-units (list '/ n d) nil)
+               (if (eq pow1 1)
+                   (math-to-standard-units (list '/ n d) nil)
+                 (list '^ (math-to-standard-units (list '/ n d) nil) pow1))
 	     (let (ud1)
 	       (setq un (nth 4 un)
 		     ud (nth 4 ud))