diff --git a/constants/error.constant.js b/constants/error.constant.js
index 06ab069d..f2e6c535 100644
--- a/constants/error.constant.js
+++ b/constants/error.constant.js
@@ -9,6 +9,7 @@ const VOLUNTEER_404_MESSAGE = "Volunteer not found";
 const SETTINGS_404_MESSAGE = "Settings not found";
 
 const ACCOUNT_TYPE_409_MESSAGE = "Wrong account type";
+const ACCOUNT_EMAIL_409_MESSAGE = "Email already in use";
 const SPONSOR_ID_409_MESSAGE = "Conflict with sponsor accountId link";
 const VOLUNTEER_ID_409_MESSAGE = "Conflict with volunteer accountId link";
 const HACKER_ID_409_MESSAGE = "Conflict with hacker accountId link";
@@ -50,6 +51,7 @@ module.exports = {
     TEAM_404_MESSAGE: TEAM_404_MESSAGE,
     RESUME_404_MESSAGE: RESUME_404_MESSAGE,
     ACCOUNT_TYPE_409_MESSAGE: ACCOUNT_TYPE_409_MESSAGE,
+    ACCOUNT_EMAIL_409_MESSAGE: ACCOUNT_EMAIL_409_MESSAGE,
     SPONSOR_ID_409_MESSAGE: SPONSOR_ID_409_MESSAGE,
     VOLUNTEER_ID_409_MESSAGE: VOLUNTEER_ID_409_MESSAGE,
     TEAM_MEMBER_409_MESSAGE: TEAM_MEMBER_409_MESSAGE,
diff --git a/middlewares/account.middleware.js b/middlewares/account.middleware.js
index bea0e578..38b14170 100644
--- a/middlewares/account.middleware.js
+++ b/middlewares/account.middleware.js
@@ -168,7 +168,17 @@ async function updateAccount(req, res, next) {
     // If we are changing the email, and there is a difference between the two, set back to unconfirmed status.
     // TODO: When pull request for parse patch refactor #546 hits, req.body.email will not be present.
     if (req.body.email && account.email != req.body.email) {
-        req.body.confirmed = false;
+        const existingAccount = await Services.Account.findByEmail(
+            account.email
+        );
+        if (existingAccount) {
+            return next({
+                status: 409,
+                message: Constants.Error.ACCOUNT_EMAIL_409_MESSAGE
+            });
+        } else {
+            req.body.confirmed = false;
+        }
     }
 
     req.body.account = await Services.Account.updateOne(
diff --git a/package-lock.json b/package-lock.json
index 6b6ce283..1b488cd6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5457,11 +5457,6 @@
       "resolved": "https://registry.npmjs.org/lodash.clone/-/lodash.clone-4.5.0.tgz",
       "integrity": "sha1-GVhwRQ9aExkkeN9Lw9I9LeoZB7Y="
     },
-    "lodash.clonedeep": {
-      "version": "4.5.0",
-      "resolved": "https://registry.npmjs.org/lodash.clonedeep/-/lodash.clonedeep-4.5.0.tgz",
-      "integrity": "sha1-4j8/nE+Pvd6HJSnBBxhXoIblzO8="
-    },
     "lodash.has": {
       "version": "4.5.2",
       "resolved": "https://registry.npmjs.org/lodash.has/-/lodash.has-4.5.2.tgz",
@@ -6289,11 +6284,6 @@
       "resolved": "https://registry.npmjs.org/number-is-nan/-/number-is-nan-1.0.1.tgz",
       "integrity": "sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0="
     },
-    "nvm": {
-      "version": "0.0.4",
-      "resolved": "https://registry.npmjs.org/nvm/-/nvm-0.0.4.tgz",
-      "integrity": "sha1-OKF46dMbKDUIyS0VydqGHRqSELw="
-    },
     "oauth-sign": {
       "version": "0.9.0",
       "resolved": "https://registry.npmjs.org/oauth-sign/-/oauth-sign-0.9.0.tgz",