diff --git a/backend/src/graphql/model/Contribution.ts b/backend/src/graphql/model/Contribution.ts
index c0e6d66f3..1f690a3d8 100644
--- a/backend/src/graphql/model/Contribution.ts
+++ b/backend/src/graphql/model/Contribution.ts
@@ -2,7 +2,6 @@ import { ObjectType, Field, Int } from 'type-graphql'
 import Decimal from 'decimal.js-light'
 import { Contribution as dbContribution } from '@entity/Contribution'
 import { User } from '@entity/User'
-import { ContributionMessage } from './ContributionMessage'
 
 @ObjectType()
 export class Contribution {
@@ -18,9 +17,7 @@ export class Contribution {
     this.confirmedBy = contribution.confirmedBy
     this.contributionDate = contribution.contributionDate
     this.state = contribution.contributionStatus
-    this.messages = contribution.messages
-      ? contribution.messages.map((message) => new ContributionMessage(message, message.user))
-      : []
+    this.messagesCount = contribution.messages ? contribution.messages.length : 0
   }
 
   @Field(() => Number)
@@ -53,8 +50,8 @@ export class Contribution {
   @Field(() => Date)
   contributionDate: Date
 
-  @Field(() => [ContributionMessage])
-  messages: ContributionMessage[]
+  @Field(() => Number)
+  messagesCount: number
 
   @Field(() => String)
   state: string
diff --git a/backend/src/graphql/resolver/ContributionResolver.ts b/backend/src/graphql/resolver/ContributionResolver.ts
index f8300f164..fc93880f1 100644
--- a/backend/src/graphql/resolver/ContributionResolver.ts
+++ b/backend/src/graphql/resolver/ContributionResolver.ts
@@ -97,7 +97,6 @@ export class ContributionResolver {
       .select('c')
       .from(dbContribution, 'c')
       .leftJoinAndSelect('c.messages', 'm')
-      .leftJoinAndSelect('m.user', 'u')
       .where(where)
       .orderBy('c.createdAt', order)
       .limit(pageSize)