diff --git a/admin/src/graphql/confirmPendingCreation.js b/admin/src/graphql/confirmPendingCreation.js
index 29ac5b4fc..df72cc04d 100644
--- a/admin/src/graphql/confirmPendingCreation.js
+++ b/admin/src/graphql/confirmPendingCreation.js
@@ -1,7 +1,7 @@
 import gql from 'graphql-tag'
 
 export const confirmPendingCreation = gql`
-  mutation ($id: Float!) {
+  mutation ($id: Int!) {
     confirmPendingCreation(id: $id)
   }
 `
diff --git a/admin/src/graphql/deletePendingCreation.js b/admin/src/graphql/deletePendingCreation.js
index e47fa6a8d..edf45fe74 100644
--- a/admin/src/graphql/deletePendingCreation.js
+++ b/admin/src/graphql/deletePendingCreation.js
@@ -1,7 +1,7 @@
 import gql from 'graphql-tag'
 
 export const deletePendingCreation = gql`
-  mutation ($id: Float!) {
+  mutation ($id: Int!) {
     deletePendingCreation(id: $id)
   }
 `
diff --git a/admin/src/graphql/deleteUser.js b/admin/src/graphql/deleteUser.js
index 3b9bc73b2..9e3606bd7 100644
--- a/admin/src/graphql/deleteUser.js
+++ b/admin/src/graphql/deleteUser.js
@@ -1,7 +1,7 @@
 import gql from 'graphql-tag'
 
 export const deleteUser = gql`
-  mutation ($userId: Float!) {
+  mutation ($userId: Int!) {
     deleteUser(userId: $userId)
   }
 `
diff --git a/admin/src/graphql/unDeleteUser.js b/admin/src/graphql/unDeleteUser.js
index 2c6d603b2..b48c8981f 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 ($userId: Float!) {
+  mutation ($userId: Int!) {
     unDeleteUser(userId: $userId)
   }
 `
diff --git a/admin/src/pages/UserSearch.vue b/admin/src/pages/UserSearch.vue
index 1fe44eda7..24334e0c9 100644
--- a/admin/src/pages/UserSearch.vue
+++ b/admin/src/pages/UserSearch.vue
@@ -99,7 +99,7 @@ export default {
     },
     updateDeletedAt(userId, deletedAt) {
       this.searchResult.find((obj) => obj.userId === userId).deletedAt = deletedAt
-      this.toastSuccess(this.$t('user_deleted'))
+      this.toastSuccess(deletedAt ? this.$t('user_deleted') : this.$t('user_recovered'))
     },
   },
   watch: {
diff --git a/backend/src/graphql/resolver/AdminResolver.ts b/backend/src/graphql/resolver/AdminResolver.ts
index 4c902496d..d98b38b7f 100644
--- a/backend/src/graphql/resolver/AdminResolver.ts
+++ b/backend/src/graphql/resolver/AdminResolver.ts
@@ -127,7 +127,10 @@ export class AdminResolver {
 
   @Authorized([RIGHTS.DELETE_USER])
   @Mutation(() => Date, { nullable: true })
-  async deleteUser(@Arg('userId') userId: number, @Ctx() context: any): Promise<Date | null> {
+  async deleteUser(
+    @Arg('userId', () => Int) userId: number,
+    @Ctx() context: any,
+  ): Promise<Date | null> {
     const user = await dbUser.findOne({ id: userId })
     // user exists ?
     if (!user) {
@@ -146,7 +149,7 @@ export class AdminResolver {
 
   @Authorized([RIGHTS.UNDELETE_USER])
   @Mutation(() => Date, { nullable: true })
-  async unDeleteUser(@Arg('userId') userId: number): Promise<Date | null> {
+  async unDeleteUser(@Arg('userId', () => Int) userId: number): Promise<Date | null> {
     const user = await dbUser.findOne({ id: userId }, { withDeleted: true })
     // user exists ?
     if (!user) {
@@ -288,7 +291,7 @@ export class AdminResolver {
 
   @Authorized([RIGHTS.DELETE_PENDING_CREATION])
   @Mutation(() => Boolean)
-  async deletePendingCreation(@Arg('id') id: number): Promise<boolean> {
+  async deletePendingCreation(@Arg('id', () => Int) id: number): Promise<boolean> {
     const entity = await AdminPendingCreation.findOneOrFail(id)
     const res = await AdminPendingCreation.delete(entity)
     return !!res
@@ -296,7 +299,10 @@ export class AdminResolver {
 
   @Authorized([RIGHTS.CONFIRM_PENDING_CREATION])
   @Mutation(() => Boolean)
-  async confirmPendingCreation(@Arg('id') id: number, @Ctx() context: any): Promise<boolean> {
+  async confirmPendingCreation(
+    @Arg('id', () => Int) id: number,
+    @Ctx() context: any,
+  ): Promise<boolean> {
     const pendingCreation = await AdminPendingCreation.findOneOrFail(id)
     const moderatorUser = context.user
     if (moderatorUser.id === pendingCreation.userId)
diff --git a/backend/src/seeds/graphql/mutations.ts b/backend/src/seeds/graphql/mutations.ts
index 19ca2a8d0..f68d983c0 100644
--- a/backend/src/seeds/graphql/mutations.ts
+++ b/backend/src/seeds/graphql/mutations.ts
@@ -94,7 +94,7 @@ export const createPendingCreation = gql`
 `
 
 export const confirmPendingCreation = gql`
-  mutation ($id: Float!) {
+  mutation ($id: Int!) {
     confirmPendingCreation(id: $id)
   }
 `