diff --git a/packages/jsonld-dataset-proxy/src/setProxy/ObjectSetProxy.ts b/packages/jsonld-dataset-proxy/src/setProxy/ObjectSetProxy.ts
index 9af9f4b..6b99135 100644
--- a/packages/jsonld-dataset-proxy/src/setProxy/ObjectSetProxy.ts
+++ b/packages/jsonld-dataset-proxy/src/setProxy/ObjectSetProxy.ts
@@ -16,8 +16,12 @@ export class ObjectSetProxy<
 > extends WildcardObjectSetProxy<T> {
   protected quadMatch: ObjectSetProxyQuadMatch;
 
-  constructor(context: ProxyContext, quadMatch: ObjectSetProxyQuadMatch) {
-    super(context, quadMatch);
+  constructor(
+    context: ProxyContext,
+    quadMatch: ObjectSetProxyQuadMatch,
+    isLangSet?: boolean,
+  ) {
+    super(context, quadMatch, isLangSet);
     this.quadMatch = quadMatch;
   }
 
diff --git a/packages/jsonld-dataset-proxy/src/setProxy/WildcardObjectSetProxy.ts b/packages/jsonld-dataset-proxy/src/setProxy/WildcardObjectSetProxy.ts
index beb23ab..7e4034b 100644
--- a/packages/jsonld-dataset-proxy/src/setProxy/WildcardObjectSetProxy.ts
+++ b/packages/jsonld-dataset-proxy/src/setProxy/WildcardObjectSetProxy.ts
@@ -27,13 +27,16 @@ export class WildcardObjectSetProxy<
   T extends NonNullable<RawValue>,
 > extends SetProxy<T> {
   protected quadMatch: WildcardObjectSetProxyQuadMatch;
+  protected isLangSet: boolean;
 
   constructor(
     context: ProxyContext,
     quadMatch: WildcardObjectSetProxyQuadMatch,
+    isLangSet?: boolean,
   ) {
     super(context, quadMatch);
     this.quadMatch = quadMatch;
+    this.isLangSet = isLangSet ?? false;
   }
 
   protected getSPOG(value?: T | undefined): {
diff --git a/packages/jsonld-dataset-proxy/src/setProxy/createNewSetProxy.ts b/packages/jsonld-dataset-proxy/src/setProxy/createNewSetProxy.ts
index 99c06b6..0a4c300 100644
--- a/packages/jsonld-dataset-proxy/src/setProxy/createNewSetProxy.ts
+++ b/packages/jsonld-dataset-proxy/src/setProxy/createNewSetProxy.ts
@@ -15,17 +15,20 @@ export function createNewSetProxy<T extends NonNullable<RawValue>>(
   quadMatch: QuadMatch,
   isSubjectOriented: boolean,
   proxyContext: ProxyContext,
+  isLangSet?: boolean,
 ): SetProxy<T> {
   if (!isSubjectOriented) {
     if (quadMatch[0] && quadMatch[1]) {
       return new ObjectSetProxy<T>(
         proxyContext,
         quadMatch as ObjectSetProxyQuadMatch,
+        isLangSet,
       );
     } else {
       return new WildcardObjectSetProxy<T>(
         proxyContext,
         quadMatch as WildcardObjectSetProxyQuadMatch,
+        isLangSet,
       );
     }
   } else {