1 files changed, 3 insertions, 0 deletions

diff --git a/lisp/calc/calc-aent.el b/lisp/calc/calc-aent.el
index b947b597acf..8af03c4d206 100644
--- a/lisp/calc/calc-aent.el
+++ b/lisp/calc/calc-aent.el
@@ -947,6 +947,9 @@ in Calc algebraic input.")
             first nil))
     x))
 
+;; calc-arg-values is defined in calc-ext.el, but is used here.
+(defvar calc-arg-values)
+
 (defun calc-check-user-syntax (&optional x prec)
   (let ((p calc-user-parse-table)
         (matches nil)