diff --git a/lisp/ielm.el b/lisp/ielm.el
index 183f8a6ce3e..b0354321656 100644
--- a/lisp/ielm.el
+++ b/lisp/ielm.el
@@ -217,7 +217,7 @@ This variable is buffer-local.")
 
 (defun ielm-indent-line nil
   "Indent the current line as Lisp code if it is not a prompt line."
-  (when (save-excursion (comint-bol) (bolp))
+  (when (save-excursion (comint-bol t) (bolp))
     (lisp-indent-line)))
 
 ;;; Working buffer manipulation