1 files changed, 2 insertions, 0 deletions
diff --git a/src/scTypes.ml b/src/scTypes.ml
index f0a42d4..46886a9 100644
--- a/src/scTypes.ml
+++ b/src/scTypes.ml
@@ -92,6 +92,8 @@ module Type = struct
       match f with
       | DataFormat.Number -> T.num n
       | DataFormat.Date -> T.date n
+      | _ -> raise Errors.TypeError
+
 
     let eval t = T.observe (eval_type t)