diff --git a/src/migrations/20210428062103-user-permission-to-rbac.js b/src/migrations/20210428062103-user-permission-to-rbac.js
index 36d5e75efd..1500ddd7df 100644
--- a/src/migrations/20210428062103-user-permission-to-rbac.js
+++ b/src/migrations/20210428062103-user-permission-to-rbac.js
@@ -2,8 +2,8 @@
 
 const async = require('async');
 
-function resolveRoleName(permissions = []) {
-    if (permissions.length === 0) {
+function resolveRoleName(permissions) {
+    if (!permissions || permissions.length === 0) {
         return 'Viewer';
     }
     if (permissions.includes('ADMIN')) {
@@ -13,24 +13,27 @@ function resolveRoleName(permissions = []) {
 }
 
 exports.up = function(db, cb) {
-    db.runSql(`SELECT id, permissions from users;`, (err, results) => {
-        if (results.rowCount > 0) {
-            const users = results.rows;
-            const insertRootRole = users.map(u => {
-                const roleName = resolveRoleName(u.permissions);
-                return db.runSql.bind(
-                    db,
-                    `INSERT INTO role_user (role_id, user_id) 
+    db.runSql(
+        `SELECT id, permissions from users WHERE id NOT IN (select user_id from role_user);`,
+        (err, results) => {
+            if (results.rowCount > 0) {
+                const users = results.rows;
+                const insertRootRole = users.map(u => {
+                    const roleName = resolveRoleName(u.permissions);
+                    return db.runSql.bind(
+                        db,
+                        `INSERT INTO role_user (role_id, user_id) 
                      SELECT id, '${u.id}'
                      FROM roles
                      WHERE name = '${roleName}' AND type = 'root';`,
-                );
-            });
-            async.series(insertRootRole, cb);
-        } else {
-            cb();
-        }
-    });
+                    );
+                });
+                async.series(insertRootRole, cb);
+            } else {
+                cb();
+            }
+        },
+    );
 };
 
 exports.down = function(db, cb) {