diff --git a/lisp/calc/calc-bin.el b/lisp/calc/calc-bin.el
index 16834483d7e..ffbbcd258b8 100644
--- a/lisp/calc/calc-bin.el
+++ b/lisp/calc/calc-bin.el
@@ -677,7 +677,6 @@
 			      int (math-add int 1))))
 		  (setq str (concat (math-format-number int) point str)))
 		(when calc-group-digits
-		  (require 'calc-ext)
 		  (setq str (math-group-float str))))
 	    (setq figs 0))))
     (or str