diff --git a/src/hackerbase.scm b/src/hackerbase.scm
index 0eb7fc7..4d2fac9 100644
--- a/src/hackerbase.scm
+++ b/src/hackerbase.scm
@@ -24,6 +24,7 @@
 ;;
 
 (import (chicken repl)
+	(chicken format)
 	command-line
 	mbase
 	brmember