diff --git a/collects/typed-scheme/private/base-env.ss b/collects/typed-scheme/private/base-env.ss
index 6faf49bf14..387022ac35 100644
--- a/collects/typed-scheme/private/base-env.ss
+++ b/collects/typed-scheme/private/base-env.ss
@@ -219,6 +219,15 @@
      [string>? (->* (list -String -String) -String B)]
      [string=? (->* (list -String -String) -String B)]
      [char=? (->* (list -Char -Char) -Char B)]
+     [char<=? (->* (list -Char -Char) -Char B)]
+     [char>=? (->* (list -Char -Char) -Char B)]
+     [char<? (->* (list -Char -Char) -Char B)]
+     [char>? (->* (list -Char -Char) -Char B)]
+     [char-ci=? (->* (list -Char -Char) -Char B)]
+     [char-ci<=? (->* (list -Char -Char) -Char B)]
+     [char-ci>=? (->* (list -Char -Char) -Char B)]
+     [char-ci>? (->* (list -Char -Char) -Char B)]
+     [char-ci<? (->* (list -Char -Char) -Char B)]
      [string<=? (->* (list -String -String) -String B)]
      [string>=? (->* (list -String -String) -String B)]