diff --git a/nselib/base64.lua b/nselib/base64.lua
index 6fb89ea56..b59a4d61e 100644
--- a/nselib/base64.lua
+++ b/nselib/base64.lua
@@ -6,6 +6,7 @@
 
 module(... or "base64",package.seeall)
 
+require 'bin'
 
 -- todo: make metatable/index --> '' for b64dctable