diff --git a/admin/src/graphql/unDeleteUser.js b/admin/src/graphql/unDeleteUser.js
index b48c8981f..2c6d603b2 100644
--- a/admin/src/graphql/unDeleteUser.js
+++ b/admin/src/graphql/unDeleteUser.js
@@ -1,7 +1,7 @@
 import gql from 'graphql-tag'
 
 export const unDeleteUser = gql`
-  mutation ($userId: Int!) {
+  mutation ($userId: Float!) {
     unDeleteUser(userId: $userId)
   }
 `
diff --git a/backend/src/auth/RIGHTS.ts b/backend/src/auth/RIGHTS.ts
index b7b23c931..3b3f7580c 100644
--- a/backend/src/auth/RIGHTS.ts
+++ b/backend/src/auth/RIGHTS.ts
@@ -27,4 +27,5 @@ export enum RIGHTS {
   CONFIRM_PENDING_CREATION = 'CONFIRM_PENDING_CREATION',
   SEND_ACTIVATION_EMAIL = 'SEND_ACTIVATION_EMAIL',
   DELETE_USER = 'DELETE_USER',
+  UNDELETE_USER = 'UNDELETE_USER',
 }
diff --git a/backend/src/graphql/resolver/AdminResolver.ts b/backend/src/graphql/resolver/AdminResolver.ts
index 484fad7d8..0e1002382 100644
--- a/backend/src/graphql/resolver/AdminResolver.ts
+++ b/backend/src/graphql/resolver/AdminResolver.ts
@@ -114,6 +114,19 @@ export class AdminResolver {
     return true
   }
 
+  @Authorized([RIGHTS.UNDELETE_USER])
+  @Mutation(() => Boolean)
+  async unDeleteUser(@Arg('userId') userId: number): Promise<boolean> {
+    const user = await User.findOne({ id: userId }, { withDeleted: true })
+    // user exists ?
+    if (!user) {
+      throw new Error(`Could not find user with userId: ${userId}`)
+    }
+    // recover user account
+    await user.recover()
+    return true
+  }
+
   @Authorized([RIGHTS.CREATE_PENDING_CREATION])
   @Mutation(() => [Number])
   async createPendingCreation(