diff --git a/backend/src/graphql/arg/AdminUpdateContributionArgs.ts b/backend/src/graphql/arg/AdminUpdateContributionArgs.ts
index 392365b38..65f1cf3f3 100644
--- a/backend/src/graphql/arg/AdminUpdateContributionArgs.ts
+++ b/backend/src/graphql/arg/AdminUpdateContributionArgs.ts
@@ -6,9 +6,6 @@ export default class AdminUpdateContributionArgs {
   @Field(() => Int)
   id: number
 
-  @Field(() => String)
-  email: string
-
   @Field(() => Decimal)
   amount: Decimal
 
diff --git a/backend/src/graphql/model/Contribution.ts b/backend/src/graphql/model/Contribution.ts
index 69b372e40..989dd32b2 100644
--- a/backend/src/graphql/model/Contribution.ts
+++ b/backend/src/graphql/model/Contribution.ts
@@ -22,6 +22,7 @@ export class Contribution {
     this.deletedAt = contribution.deletedAt
     this.deletedBy = contribution.deletedBy
     this.moderatorId = contribution.moderatorId
+    this.userId = contribution.userId
   }
 
   @Field(() => Number)
@@ -69,8 +70,11 @@ export class Contribution {
   @Field(() => String)
   state: string
 
-  @Field(() => Number, { nullable: true })
+  @Field(() => Int, { nullable: true })
   moderatorId: number | null
+
+  @Field(() => Int, { nullable: true })
+  userId: number | null
 }
 
 @ObjectType()
diff --git a/backend/src/graphql/resolver/ContributionResolver.ts b/backend/src/graphql/resolver/ContributionResolver.ts
index 2469f60ba..561d5c88c 100644
--- a/backend/src/graphql/resolver/ContributionResolver.ts
+++ b/backend/src/graphql/resolver/ContributionResolver.ts
@@ -313,41 +313,27 @@ export class ContributionResolver {
   @Authorized([RIGHTS.ADMIN_UPDATE_CONTRIBUTION])
   @Mutation(() => AdminUpdateContribution)
   async adminUpdateContribution(
-    @Args() { id, email, amount, memo, creationDate }: AdminUpdateContributionArgs,
+    @Args() { id, amount, memo, creationDate }: AdminUpdateContributionArgs,
     @Ctx() context: Context,
   ): Promise<AdminUpdateContribution> {
     const clientTimezoneOffset = getClientTimezoneOffset(context)
-    const emailContact = await UserContact.findOne({
-      where: { email },
-      withDeleted: true,
-      relations: ['user'],
-    })
-    if (!emailContact || !emailContact.user) {
-      throw new LogError('Could not find User', email)
-    }
-    if (emailContact.deletedAt || emailContact.user.deletedAt) {
-      throw new LogError('User was deleted', email)
-    }
 
     const moderator = getUser(context)
 
     const contributionToUpdate = await DbContribution.findOne({
       where: { id, confirmedAt: IsNull(), deniedAt: IsNull() },
     })
+
     if (!contributionToUpdate) {
       throw new LogError('Contribution not found', id)
     }
 
-    if (contributionToUpdate.userId !== emailContact.user.id) {
-      throw new LogError('User of the pending contribution and send user does not correspond')
-    }
-
     if (contributionToUpdate.moderatorId === null) {
       throw new LogError('An admin is not allowed to update an user contribution')
     }
 
     const creationDateObj = new Date(creationDate)
-    let creations = await getUserCreation(emailContact.user.id, clientTimezoneOffset)
+    let creations = await getUserCreation(contributionToUpdate.userId, clientTimezoneOffset)
 
     // TODO: remove this restriction
     if (contributionToUpdate.contributionDate.getMonth() === creationDateObj.getMonth()) {
@@ -371,9 +357,13 @@ export class ContributionResolver {
     result.memo = contributionToUpdate.memo
     result.date = contributionToUpdate.contributionDate
 
-    result.creation = await getUserCreation(emailContact.user.id, clientTimezoneOffset)
+    result.creation = await getUserCreation(contributionToUpdate.userId, clientTimezoneOffset)
 
-    await EVENT_ADMIN_CONTRIBUTION_UPDATE(emailContact.user.id, contributionToUpdate.id, amount)
+    await EVENT_ADMIN_CONTRIBUTION_UPDATE(
+      contributionToUpdate.userId,
+      contributionToUpdate.id,
+      amount,
+    )
 
     return result
   }