diff --git a/app/code/Magento/CustomerGraphQl/Model/Resolver/IsEmailAvailable.php b/app/code/Magento/CustomerGraphQl/Model/Resolver/IsEmailAvailable.php
index ddf1aec275ec..7e13a40cc8ae 100644
--- a/app/code/Magento/CustomerGraphQl/Model/Resolver/IsEmailAvailable.php
+++ b/app/code/Magento/CustomerGraphQl/Model/Resolver/IsEmailAvailable.php
@@ -44,7 +44,7 @@ public function resolve(
         array $args = null
     ) {
         if (!isset($args['email']) || empty($args['email'])) {
-            throw new GraphQlInputException(__('"Email should be specified'));
+            throw new GraphQlInputException(__('Email must be specified'));
         }
 
         try {
diff --git a/app/code/Magento/CustomerGraphQl/Model/Resolver/UpdateCustomerAddress.php b/app/code/Magento/CustomerGraphQl/Model/Resolver/UpdateCustomerAddress.php
index bf41b7ddd10c..36d7d6619931 100644
--- a/app/code/Magento/CustomerGraphQl/Model/Resolver/UpdateCustomerAddress.php
+++ b/app/code/Magento/CustomerGraphQl/Model/Resolver/UpdateCustomerAddress.php
@@ -70,11 +70,11 @@ public function resolve(
         array $args = null
     ) {
         if (!isset($args['id']) || empty($args['id'])) {
-            throw new GraphQlInputException(__('Address "id" value should be specified'));
+            throw new GraphQlInputException(__('Address "id" value must be specified'));
         }
 
         if (!isset($args['input']) || !is_array($args['input']) || empty($args['input'])) {
-            throw new GraphQlInputException(__('"input" value should be specified'));
+            throw new GraphQlInputException(__('"input" value must be specified'));
         }
 
         $customer = $this->getCustomer->execute($context);