diff --git a/implementations/javascript/packages/core/src/annotated.ts b/implementations/javascript/packages/core/src/annotated.ts
index d7eebe4..1555152 100644
--- a/implementations/javascript/packages/core/src/annotated.ts
+++ b/implementations/javascript/packages/core/src/annotated.ts
@@ -63,7 +63,7 @@ export class Annotated<T = GenericEmbedded> implements Preservable<T>, PreserveW
         this.item = item;
     }
 
-    __as__preserve__(): Value<T> {
+    __as_preserve__(): Value<T> {
         return this;
     }