diff --git a/lib/krb5/version-script.map b/lib/krb5/version-script.map
index ce48e1c93..2120b2be1 100644
--- a/lib/krb5/version-script.map
+++ b/lib/krb5/version-script.map
@@ -702,6 +702,7 @@ HEIMDAL_KRB5_1.0 {
 
 		# testing
 		_krb5_aes_cts_encrypt;
+		_krb5_n_fold;
 	local:
 		*;
 };