diff --git a/src/domaindb.js b/src/domaindb.js
index b2e5a1229..e67850b86 100644
--- a/src/domaindb.js
+++ b/src/domaindb.js
@@ -101,7 +101,13 @@ function del(domain, callback) {
     assert.strictEqual(typeof callback, 'function');
 
     database.query('DELETE FROM domains WHERE domain=?', [ domain ], function (error, result) {
-        if (error && error.code === 'ER_ROW_IS_REFERENCED_2') return callback(new BoxError(BoxError.CONFLICT, error.message));
+        if (error && error.code === 'ER_ROW_IS_REFERENCED_2') {
+            if (error.message.indexOf('apps_mailDomain_constraint') !== -1) return callback(new BoxError(BoxError.CONFLICT, 'Domain is in use by an app or the mailbox of an app. Check the domains of apps and the Email section of each app.'));
+            if (error.message.indexOf('subdomains') !== -1) return callback(new BoxError(BoxError.CONFLICT, 'Domain is in use by one or more app(s).'));
+            if (error.message.indexOf('mail') !== -1) return callback(new BoxError(BoxError.CONFLICT, 'Domain is in use by one or more mailboxes. Delete them first in the Email view.'));
+
+            return callback(new BoxError(BoxError.CONFLICT, error.message));
+        }
         if (error) return callback(new BoxError(BoxError.DATABASE_ERROR, error));
         if (result.affectedRows === 0) return callback(new BoxError(BoxError.NOT_FOUND, 'Domain not found'));
 
diff --git a/src/domains.js b/src/domains.js
index d0c56e5e8..2271e7627 100644
--- a/src/domains.js
+++ b/src/domains.js
@@ -309,13 +309,6 @@ function del(domain, auditSource, callback) {
     if (domain === settings.adminDomain()) return callback(new BoxError(BoxError.CONFLICT, 'Cannot remove admin domain'));
 
     domaindb.del(domain, function (error) {
-        if (error && error.reason === BoxError.CONFLICT) {
-            if (error.message.indexOf('apps_mailDomain_constraint') !== -1) return callback(new BoxError(BoxError.CONFLICT, 'Domain is in use as the mailbox of an app. Check the Email section of each app.'));
-            if (error.message.indexOf('subdomains') !== -1) return callback(new BoxError(BoxError.CONFLICT, 'Domain is in use by an app. Move the app first to a different location.'));
-            if (error.message.indexOf('mail') !== -1) return callback(new BoxError(BoxError.CONFLICT, 'Domain is in use by a mailbox. Delete mailboxes first in the Email view.'));
-
-            // intentional fall through
-        }
         if (error) return callback(error);
 
         eventlog.add(eventlog.ACTION_DOMAIN_REMOVE, auditSource, { domain });