diff --git a/pdfio1.def b/pdfio1.def
index 6636250..e1f36b2 100644
--- a/pdfio1.def
+++ b/pdfio1.def
@@ -12,6 +12,7 @@ _pdfioCryptoRC4Init
 _pdfioCryptoSHA256Append
 _pdfioCryptoSHA256Finish
 _pdfioCryptoSHA256Init
+_pdfioTokenInit
 _pdfioValueDebug
 _pdfioValueRead
 pdfioArrayAppendArray