diff --git a/backend/src/graphql/model/Contribution.ts b/backend/src/graphql/model/Contribution.ts
index dc1dd39e9..989296848 100644
--- a/backend/src/graphql/model/Contribution.ts
+++ b/backend/src/graphql/model/Contribution.ts
@@ -35,6 +35,11 @@ export class Contribution {
 
 @ObjectType()
 export class ContributionListResult {
+  constructor(count: number, list: Contribution[]) {
+    this.linkCount = count
+    this.linkList = list
+  }
+
   @Field(() => Int)
   linkCount: number