diff --git a/lisp/help-fns.el b/lisp/help-fns.el
index ec46a479ed8..7979ef3328a 100644
--- a/lisp/help-fns.el
+++ b/lisp/help-fns.el
@@ -1141,7 +1141,7 @@ current buffer and the selected frame, respectively."
 				    (format
                                      "Describe symbol (default %s): " v-or-f)
 				  "Describe symbol: ")
-				obarray
+				#'help--symbol-completion-table
 				(lambda (vv)
                                   (cl-some (lambda (x) (funcall (nth 1 x) vv))
                                            describe-symbol-backends))