diff --git a/services/web/app/src/Features/Helpers/EmailHelper.js b/services/web/app/src/Features/Helpers/EmailHelper.js
index 97e4afb84d..2fa4975cb7 100644
--- a/services/web/app/src/Features/Helpers/EmailHelper.js
+++ b/services/web/app/src/Features/Helpers/EmailHelper.js
@@ -1,5 +1,6 @@
 const { parseOneAddress } = require('email-addresses')
 
+// available for frontend in https://github.com/overleaf/internal/blob/19d432c70b173752ee7c6d8978dd6be16b042921/services/web/frontend/js/shared/utils/email.tsx#L4
 const EMAIL_REGEXP =
   // eslint-disable-next-line no-useless-escape
   /^([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/
diff --git a/services/web/frontend/js/shared/utils/email.tsx b/services/web/frontend/js/shared/utils/email.tsx
index a22375dfcd..9c2f05a6dd 100644
--- a/services/web/frontend/js/shared/utils/email.tsx
+++ b/services/web/frontend/js/shared/utils/email.tsx
@@ -1,4 +1,4 @@
-// Copied from backend code: https://github.com/overleaf/internal/blob/6af8ae850bd8075e6bf0ebcafd2731177cdf49ad/services/web/app/src/Features/Helpers/EmailHelper.js#L4
+// Copied from backend code: https://github.com/overleaf/internal/blob/6af8ae850bd8075e6bf0ebcafd2731177cdf49ad/services/web/app/src/Features/Helpers/EmailHelper.js#L5
 const EMAIL_REGEXP =
   // eslint-disable-next-line no-useless-escape
   /^([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/