diff --git a/errors.js b/errors.js
index 65f0a0d2b..53e8bf351 100644
--- a/errors.js
+++ b/errors.js
@@ -97,6 +97,16 @@ const ErrEmailVerificationToken = new APIError('token is required', {
   status: 400,
 });
 
+// ErrEmailAlreadyVerified is returned when the user tries to verify an email
+// address that has already been verified.
+const ErrEmailAlreadyVerified = new APIError(
+  'email address is already verified',
+  {
+    translation_key: 'EMAIL_ALREADY_VERIFIED',
+    status: 409,
+  }
+);
+
 // ErrPasswordResetToken is returned in the event that the password reset is requested
 // without a token.
 const ErrPasswordResetToken = new APIError('token is required', {
@@ -284,6 +294,7 @@ module.exports = {
   ErrCommentTooShort,
   ErrContainsProfanity,
   ErrEditWindowHasEnded,
+  ErrEmailAlreadyVerified,
   ErrEmailTaken,
   ErrEmailVerificationToken,
   ErrInstallLock,
diff --git a/locales/en.yml b/locales/en.yml
index 59689d1b1..08d64ddc8 100644
--- a/locales/en.yml
+++ b/locales/en.yml
@@ -206,6 +206,7 @@ en:
   error:
     COMMENT_PARENT_NOT_VISIBLE: "The comment that you're replying to has been removed or doesn't exist."
     EMAIL_VERIFICATION_TOKEN_INVALID: "Email verification token is invalid."
+    EMAIL_ALREADY_VERIFIED: "Email address already verified."
     PASSWORD_RESET_TOKEN_INVALID: "Your password reset link is invalid."
     COMMENT_TOO_SHORT: "Comments should be more than one character, please revise your comment and try again."
     NOT_AUTHORIZED: "You are not authorized to perform this action."
diff --git a/routes/api/v1/account.js b/routes/api/v1/account.js
index f7d8ea126..561134885 100644
--- a/routes/api/v1/account.js
+++ b/routes/api/v1/account.js
@@ -17,7 +17,11 @@ router.get('/', authorization.needed(), (req, res, next) => {
  * @param {Function} verifier the function used to verify the token, will throw on error
  * @param {Object} error the error object to send back in the event an error is found
  */
-const tokenCheck = (verifier, error) => async (req, res, next) => {
+const tokenCheck = (verifier, error, ...whitelistedErrors) => async (
+  req,
+  res,
+  next
+) => {
   const { token = null, check = false } = req.body;
 
   if (check) {
@@ -26,6 +30,10 @@ const tokenCheck = (verifier, error) => async (req, res, next) => {
       // Verify the token.
       await verifier(token);
     } catch (err) {
+      if (whitelistedErrors.includes(err)) {
+        return next(err);
+      }
+
       // Log out the error, slurp it and send out the predefined error to the
       // error handler.
       console.error(err);
@@ -48,7 +56,8 @@ router.post(
   '/email/verify',
   tokenCheck(
     UsersService.verifyEmailConfirmationToken,
-    errors.ErrEmailVerificationToken
+    errors.ErrEmailVerificationToken,
+    errors.ErrEmailAlreadyVerified
   ),
   async (req, res, next) => {
     const { token } = req.body;
diff --git a/services/users.js b/services/users.js
index af91cacc7..0617d5158 100644
--- a/services/users.js
+++ b/services/users.js
@@ -837,7 +837,7 @@ class UsersService {
 
     // Ensure that the user email hasn't already been verified.
     if (profile && profile.metadata && profile.metadata.confirmed_at) {
-      throw new Error('email address already confirmed');
+      throw errors.ErrEmailAlreadyVerified;
     }
 
     return JWT_SECRET.sign(
@@ -884,7 +884,7 @@ class UsersService {
     }
 
     if (profile.metadata && profile.metadata.confirmed_at !== null) {
-      throw errors.ErrEmailVerificationToken;
+      throw errors.ErrEmailAlreadyVerified;
     }
 
     return decoded;