diff --git a/modules/client/back/methods/client/checkDuplicated.js b/modules/client/back/methods/client/checkDuplicated.js
index acaffbf42..522cd088f 100644
--- a/modules/client/back/methods/client/checkDuplicated.js
+++ b/modules/client/back/methods/client/checkDuplicated.js
@@ -25,10 +25,9 @@ module.exports = Self => {
 
         const client = await Self.app.models.Client.findById(id, myOptions);
 
-        const emails = client.email ? client.email.split(',') : null;
-
         const findParams = [];
-        if (emails.length) {
+        if (client.email) {
+            const emails = client.email.split(',');
             for (let email of emails)
                 findParams.push({email: email});
         }