diff --git a/sql/udf_example.def b/sql/udf_example.def
index d3081ca7768..ee107d58e51 100644
--- a/sql/udf_example.def
+++ b/sql/udf_example.def
@@ -22,3 +22,5 @@ EXPORTS
   avgcost_add
   avgcost_clear
   avgcost
+  is_const
+  is_const_init