diff --git a/tasks/unix-server b/tasks/unix-server
index 6df73aea..efe30aad 100644
--- a/tasks/unix-server
+++ b/tasks/unix-server
@@ -19,7 +19,7 @@ Packages:
  # interactive shells, because users' preferences vary
  zsh
  tcsh
- ksh
+ pdksh
  # various console programs
  screen
  telnet