diff --git a/backend/src/middleware/email/emailMiddleware.js b/backend/src/middleware/email/emailMiddleware.js
index 1143e3d0f..ea69dcd95 100644
--- a/backend/src/middleware/email/emailMiddleware.js
+++ b/backend/src/middleware/email/emailMiddleware.js
@@ -71,6 +71,5 @@ export default {
     AddEmailAddress: sendEmailVerificationMail,
     requestPasswordReset: sendPasswordResetMail,
     Signup: sendSignupMail,
-    SignupByInvitation: sendSignupMail,
   },
 }
diff --git a/backend/src/middleware/permissionsMiddleware.js b/backend/src/middleware/permissionsMiddleware.js
index c64699ac3..1bca3bb26 100644
--- a/backend/src/middleware/permissionsMiddleware.js
+++ b/backend/src/middleware/permissionsMiddleware.js
@@ -128,7 +128,6 @@ export default shield(
     Mutation: {
       '*': deny,
       login: allow,
-      SignupByInvitation: allow,
       Signup: or(publicRegistration, isAdmin),
       SignupVerification: allow,
       UpdateUser: onlyYourself,
diff --git a/backend/src/schema/types/type/EmailAddress.gql b/backend/src/schema/types/type/EmailAddress.gql
index 509a7ae28..3808d1937 100644
--- a/backend/src/schema/types/type/EmailAddress.gql
+++ b/backend/src/schema/types/type/EmailAddress.gql
@@ -9,11 +9,11 @@ type Query {
 }
 
 type Mutation {
-  Signup(email: String!): EmailAddress
-  SignupByInvitation(email: String!, token: String!): EmailAddress
+  Signup(email: String!, inviteCode: String): EmailAddress
   SignupVerification(
     nonce: String!
     email: String!
+    inviteCode: String
     name: String!
     password: String!
     slug: String