1 files changed, 2 insertions, 0 deletions
diff --git a/src/type/mod.rs b/src/type/mod.rs
index c726001..e1ca798 100644
--- a/src/type/mod.rs
+++ b/src/type/mod.rs
@@ -83,6 +83,8 @@ pub enum TypeError {
 
     DifferentTypeCaseArms(Type, Type),
 
+    SumDefNoTypeLiteral(SExp),
+
     OtherError
 }