1 files changed, 3 insertions, 0 deletions
diff --git a/src/fields/Types.ts b/src/fields/Types.ts
index 69dbe9756..337e8ca21 100644
--- a/src/fields/Types.ts
+++ b/src/fields/Types.ts
@@ -1,6 +1,7 @@
 import { DateField } from './DateField';
 import { Doc, Field, FieldResult, Opt } from './Doc';
 import { List } from './List';
+import { ProxyField } from './Proxy';
 import { RefField } from './RefField';
 import { RichTextField } from './RichTextField';
 import { ScriptField } from './ScriptField';
@@ -72,6 +73,8 @@ export function Cast<T extends CastCtor>(field: FieldResult, ctor: T, defaultVal
             }
         } else if (field instanceof (ctor as any)) {
             return field as ToType<T>;
+        } else if (field instanceof ProxyField && field.value instanceof (ctor as any)) {
+            return field.value as ToType<T>;
         }
     }
     return defaultVal === null ? undefined : defaultVal;