diff --git a/common/data/src/main/java/org/thingsboard/server/common/data/DashboardInfo.java b/common/data/src/main/java/org/thingsboard/server/common/data/DashboardInfo.java
index ff908fc..7b74e62 100644
--- a/common/data/src/main/java/org/thingsboard/server/common/data/DashboardInfo.java
+++ b/common/data/src/main/java/org/thingsboard/server/common/data/DashboardInfo.java
@@ -98,6 +98,7 @@ public class DashboardInfo extends SearchTextBased<DashboardId> implements HasNa
public boolean updateAssignedCustomer(Customer customer) {
ShortCustomerInfo customerInfo = customer.toShortCustomerInfo();
if (this.assignedCustomers != null && this.assignedCustomers.contains(customerInfo)) {
+ this.assignedCustomers.remove(customerInfo);
this.assignedCustomers.add(customerInfo);
return true;
} else {
