diff --git a/src/type-logic.ts b/src/type-logic.ts
index 916d8fe7..15f1fecd 100644
--- a/src/type-logic.ts
+++ b/src/type-logic.ts
@@ -34,6 +34,7 @@ const simpleKinds = new Set<Type['kind']>([
   'unknown',
   'never',
   'record',
+  'abrupt completion',
   'real',
   'integer',
   'non-negative integer',