diff --git a/ansi-tests/print-characters.lsp b/ansi-tests/print-characters.lsp
index 3e8a149ddd430407d760952507265f08dcac6465..03f7c9d4043a6becf0d80b541ddd178949820512 100644
--- a/ansi-tests/print-characters.lsp
+++ b/ansi-tests/print-characters.lsp
@@ -5,6 +5,8 @@
 
 (in-package :cl-test)
 
+(compile-and-load "printer-aux.lsp")
+
 ;;; See CLtS section 22.1.3.2, "Printing Characters"
 
 (deftest print.char.1