diff --git a/app/code/Magento/Bundle/Test/Mftf/Test/AdminDeleteABundleProductTest.xml b/app/code/Magento/Bundle/Test/Mftf/Test/AdminDeleteABundleProductTest.xml
index 51c30ef86242c..185874ba5f3b0 100644
--- a/app/code/Magento/Bundle/Test/Mftf/Test/AdminDeleteABundleProductTest.xml
+++ b/app/code/Magento/Bundle/Test/Mftf/Test/AdminDeleteABundleProductTest.xml
@@ -74,7 +74,7 @@
         <!--Delete-->
         <click selector="{{AdminProductFiltersSection.actions}}" stepKey="ClickOnActionsChangingView"/>
         <click selector="{{AdminProductFiltersSection.delete}}" stepKey="ClickDelete"/>
-        <click selector="//button[@class='action-primary action-accept']" stepKey="ConfirmDelete"/>
+        <click selector="//button[@class='action primary action-primary action-accept']" stepKey="ConfirmDelete"/>
         <waitForPageLoad stepKey="loading3"/>
 
         <!--Locating delete message-->
diff --git a/app/code/Magento/Bundle/Test/Mftf/Test/AdminMassDeleteBundleProducts.xml b/app/code/Magento/Bundle/Test/Mftf/Test/AdminMassDeleteBundleProducts.xml
index 2c1fcb6d7de42..a785c2724a359 100644
--- a/app/code/Magento/Bundle/Test/Mftf/Test/AdminMassDeleteBundleProducts.xml
+++ b/app/code/Magento/Bundle/Test/Mftf/Test/AdminMassDeleteBundleProducts.xml
@@ -122,7 +122,7 @@
         <waitForPageLoad stepKey="loading"/>
         <click selector="{{AdminProductFiltersSection.actions}}" stepKey="ClickOnActionsChangingView"/>
         <click selector="{{AdminProductFiltersSection.delete}}" stepKey="ClickDelete"/>
-        <click selector="//button[@class='action-primary action-accept']" stepKey="ConfirmDelete"/>
+        <click selector="//button[@class='action primary action-primary action-accept']" stepKey="ConfirmDelete"/>
         <waitForPageLoad stepKey="loading3"/>
 
         <!--Locating delete message-->
diff --git a/app/code/Magento/Catalog/Test/Mftf/Section/AdminProductFormChangeStoreSection.xml b/app/code/Magento/Catalog/Test/Mftf/Section/AdminProductFormChangeStoreSection.xml
index 04e5445c8ab63..cbfe4a314fbb7 100644
--- a/app/code/Magento/Catalog/Test/Mftf/Section/AdminProductFormChangeStoreSection.xml
+++ b/app/code/Magento/Catalog/Test/Mftf/Section/AdminProductFormChangeStoreSection.xml
@@ -9,6 +9,6 @@
         xsi:noNamespaceSchemaLocation="urn:magento:mftf:Page/etc/SectionObject.xsd">
     <section name="AdminProductFormChangeStoreSection">
         <element name="storeSelector" type="button" selector="//a[contains(text(),'{{var1}}')]" parameterized="true"/>
-        <element name="acceptButton" type="button" selector="button[class='action-primary action-accept']" timeout="30"/>
+        <element name="acceptButton" type="button" selector="button[class='action primary action-primary action-accept']" timeout="30"/>
     </section>
 </sections>
diff --git a/app/code/Magento/CatalogRule/Test/Mftf/Section/AdminNewCatalogPriceRuleSection/AdminNewCatalogPriceRuleSection.xml b/app/code/Magento/CatalogRule/Test/Mftf/Section/AdminNewCatalogPriceRuleSection/AdminNewCatalogPriceRuleSection.xml
index 35d99ae90a1ec..d5b3d95f029c7 100644
--- a/app/code/Magento/CatalogRule/Test/Mftf/Section/AdminNewCatalogPriceRuleSection/AdminNewCatalogPriceRuleSection.xml
+++ b/app/code/Magento/CatalogRule/Test/Mftf/Section/AdminNewCatalogPriceRuleSection/AdminNewCatalogPriceRuleSection.xml
@@ -12,7 +12,7 @@
         <element name="save" type="button" selector="#save" timeout="30"/>
         <element name="saveAndContinue" type="button" selector="#save_and_continue" timeout="30"/>
         <element name="delete" type="button" selector="#delete" timeout="30"/>
-        <element name="okButton" type="button" selector="//button[@class='action-primary action-accept']"/>
+        <element name="okButton" type="button" selector="//button[@class='action primary action-primary action-accept']"/>
         <element name="successMessage" type="text" selector="#messages"/>
 
         <element name="ruleName" type="input" selector="[name='name']"/>
diff --git a/app/code/Magento/CatalogSearch/Test/Mftf/Section/AdminCatalogSearchTermIndexSection.xml b/app/code/Magento/CatalogSearch/Test/Mftf/Section/AdminCatalogSearchTermIndexSection.xml
index dcaf7fb3a561d..0524292b2bd84 100644
--- a/app/code/Magento/CatalogSearch/Test/Mftf/Section/AdminCatalogSearchTermIndexSection.xml
+++ b/app/code/Magento/CatalogSearch/Test/Mftf/Section/AdminCatalogSearchTermIndexSection.xml
@@ -17,10 +17,10 @@
         <element name="searchQuery" type="text" selector="//tr[@class='data-grid-filters']//td/input[@name='search_query']"/>
         <element name="nthRow" type="checkbox" selector="//tbody/tr['{{rowNum}}']//input[@name='search']" parameterized="true"/>
         <element name="searchTermRowCheckboxBySearchQuery" type="checkbox" selector="//*[normalize-space()='{{var1}}']/preceding-sibling::td//input[@name='search']" parameterized="true" timeout="30"/>
-        <element name="okButton" type="button" selector="//button[@class='action-primary action-accept']/span" timeout="30"/>
+        <element name="okButton" type="button" selector="//button[@class='action primary action-primary action-accept']/span" timeout="30"/>
         <element name="emptyRecords" type="text" selector="//tr[@class='data-grid-tr-no-data even']/td[@class='empty-text']"/>
         <element name="gridRow" type="text" selector="//tr[@data-role='row']"/>
         <element name="numberOfSearchTermResults" type="text" selector="//tr[@data-role='row']/td[@data-column='num_results']"/>
         <element name="selectMassActionCheckbox" type="select" selector="//select[@id='search_term_grid_massaction-mass-select']"/>
     </section>
-</sections>
\ No newline at end of file
+</sections>
diff --git a/app/code/Magento/Customer/Test/Mftf/Section/AdminDeleteUserSection.xml b/app/code/Magento/Customer/Test/Mftf/Section/AdminDeleteUserSection.xml
index 0ba197999be6c..ee39c2159eaa7 100644
--- a/app/code/Magento/Customer/Test/Mftf/Section/AdminDeleteUserSection.xml
+++ b/app/code/Magento/Customer/Test/Mftf/Section/AdminDeleteUserSection.xml
@@ -12,6 +12,6 @@
         <element name="theUser" selector="//td[contains(text(), 'John')]" type="button"/>
         <element name="password" selector="#user_current_password" type="input"/>
         <element name="delete" selector="//button/span[contains(text(), 'Delete User')]" type="button"/>
-        <element name="confirm" selector="//*[@class='action-primary action-accept']" type="button"/>
+        <element name="confirm" selector="//*[@class='action primary action-primary action-accept']" type="button"/>
     </section>
 </sections>
diff --git a/app/code/Magento/Store/Test/Mftf/Section/AdminStoreGroupActionsSection.xml b/app/code/Magento/Store/Test/Mftf/Section/AdminStoreGroupActionsSection.xml
index 9ad0f40cc4d01..4257993c2c8c9 100644
--- a/app/code/Magento/Store/Test/Mftf/Section/AdminStoreGroupActionsSection.xml
+++ b/app/code/Magento/Store/Test/Mftf/Section/AdminStoreGroupActionsSection.xml
@@ -8,6 +8,6 @@
 <sections xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:mftf:Page/etc/SectionObject.xsd">
     <section name="AdminStoreGroupActionsSection">
         <element name="saveButton" type="button" selector="#save" timeout="60" />
-        <element name="okButton" type="button" selector="//footer[@class='modal-footer']//button[@class='action-primary action-accept']/span" timeout="30"/>
+        <element name="okButton" type="button" selector="//footer[@class='modal-footer']//button[@class='action primary action-primary action-accept']/span" timeout="30"/>
     </section>
 </sections>
diff --git a/app/code/Magento/Ui/view/base/web/js/modal/confirm.js b/app/code/Magento/Ui/view/base/web/js/modal/confirm.js
index e661363d2eaeb..4b57132b1f761 100644
--- a/app/code/Magento/Ui/view/base/web/js/modal/confirm.js
+++ b/app/code/Magento/Ui/view/base/web/js/modal/confirm.js
@@ -49,7 +49,7 @@ define([
                 }
             }, {
                 text: $t('OK'),
-                class: 'action-primary action-accept',
+                class: 'action primary action-primary action-accept',
 
                 /**
                  * Click handler.
diff --git a/app/code/Magento/UrlRewrite/Test/Mftf/Section/AdminUrlRewriteEditSection.xml b/app/code/Magento/UrlRewrite/Test/Mftf/Section/AdminUrlRewriteEditSection.xml
index 5a55562e99334..ff2599925776b 100644
--- a/app/code/Magento/UrlRewrite/Test/Mftf/Section/AdminUrlRewriteEditSection.xml
+++ b/app/code/Magento/UrlRewrite/Test/Mftf/Section/AdminUrlRewriteEditSection.xml
@@ -22,7 +22,7 @@
         <element name="cmsPage" selector="//td[contains(text(), '{{cmsPageUrlKey}}')]" type="button" parameterized="true"/>
         <element name="saveButton" type="button" selector="#save" timeout="30"/>
         <element name="deleteButton" type="button" selector="#delete" timeout="30"/>
-        <element name="okButton" type="button" selector="//button[@class='action-primary action-accept']" timeout="30"/>
+        <element name="okButton" type="button" selector="//button[@class='action primary action-primary action-accept']" timeout="30"/>
         <element name="requestPathField" type="input" selector="#request_path"/>
     </section>
 </sections>
diff --git a/app/code/Magento/User/Test/Mftf/Section/AdminDeleteRoleSection.xml b/app/code/Magento/User/Test/Mftf/Section/AdminDeleteRoleSection.xml
index a3a82f6ce38e0..afb7ff4828235 100644
--- a/app/code/Magento/User/Test/Mftf/Section/AdminDeleteRoleSection.xml
+++ b/app/code/Magento/User/Test/Mftf/Section/AdminDeleteRoleSection.xml
@@ -13,7 +13,7 @@
         <element name="salesRole" selector="//td[contains(text(), 'Sales')]" type="button"/>
         <element name="current_pass" type="button" selector="#current_password"/>
         <element name="delete" selector="//button/span[contains(text(), 'Delete Role')]" type="button"/>
-        <element name="confirm" selector="//*[@class='action-primary action-accept']" type="button"/>
+        <element name="confirm" selector="//*[@class='action primary action-primary action-accept']" type="button"/>
     </section>
 </sections>
 
diff --git a/app/code/Magento/User/Test/Mftf/Section/AdminDeleteUserSection.xml b/app/code/Magento/User/Test/Mftf/Section/AdminDeleteUserSection.xml
index 21ca1cb36f988..f03f3527a5b18 100644
--- a/app/code/Magento/User/Test/Mftf/Section/AdminDeleteUserSection.xml
+++ b/app/code/Magento/User/Test/Mftf/Section/AdminDeleteUserSection.xml
@@ -12,6 +12,6 @@
         <element name="role" parameterized="true" selector="//td[contains(text(), '{{roleName}}')]" type="button"/>
         <element name="password" selector="#user_current_password" type="input"/>
         <element name="delete" selector="//button/span[contains(text(), 'Delete User')]" type="button"/>
-        <element name="confirm" selector=".action-primary.action-accept" type="button"/>
+        <element name="confirm" selector=".action primary.action-primary.action-accept" type="button"/>
     </section>
 </sections>
diff --git a/app/code/Magento/User/Test/Mftf/Section/AdminRoleGridSection/AdminDeleteRoleSection.xml b/app/code/Magento/User/Test/Mftf/Section/AdminRoleGridSection/AdminDeleteRoleSection.xml
index e369d037d28f6..f2c34c0512e26 100644
--- a/app/code/Magento/User/Test/Mftf/Section/AdminRoleGridSection/AdminDeleteRoleSection.xml
+++ b/app/code/Magento/User/Test/Mftf/Section/AdminRoleGridSection/AdminDeleteRoleSection.xml
@@ -12,6 +12,6 @@
         <element name="role" parameterized="true" selector="//td[contains(text(), '{{args}}')]" type="button"/>
         <element name="current_pass" type="button" selector="#current_password"/>
         <element name="delete" selector="//button/span[contains(text(), 'Delete Role')]" type="button"/>
-        <element name="confirm" selector="//*[@class='action-primary action-accept']" type="button"/>
+        <element name="confirm" selector="//*[@class='action primary action-primary action-accept']" type="button"/>
     </section>
 </sections>
diff --git a/app/code/Magento/User/Test/Mftf/Section/AdminUserGridSection/AdminDeleteUserSection.xml b/app/code/Magento/User/Test/Mftf/Section/AdminUserGridSection/AdminDeleteUserSection.xml
index d4718ca43d6cf..1f587723b1cd7 100644
--- a/app/code/Magento/User/Test/Mftf/Section/AdminUserGridSection/AdminDeleteUserSection.xml
+++ b/app/code/Magento/User/Test/Mftf/Section/AdminUserGridSection/AdminDeleteUserSection.xml
@@ -11,7 +11,7 @@
         <element name="theUser" selector="//td[contains(text(), '{{userName}}')]" type="button" parameterized="true"/>
         <element name="password" selector="#user_current_password" type="input"/>
         <element name="delete" selector="//button/span[contains(text(), 'Delete User')]" type="button"/>
-        <element name="confirm" selector="//*[@class='action-primary action-accept']" type="button"/>
+        <element name="confirm" selector="//*[@class='action primary action-primary action-accept']" type="button"/>
         <element name="role" parameterized="true" selector="//td[contains(text(), '{{args}}')]" type="button"/>
     </section>
 </sections>
diff --git a/dev/tests/js/jasmine/tests/app/code/Magento/Ui/base/js/modal/confirm.test.js b/dev/tests/js/jasmine/tests/app/code/Magento/Ui/base/js/modal/confirm.test.js
index b9a1997a429ca..fc5a83c9fb972 100644
--- a/dev/tests/js/jasmine/tests/app/code/Magento/Ui/base/js/modal/confirm.test.js
+++ b/dev/tests/js/jasmine/tests/app/code/Magento/Ui/base/js/modal/confirm.test.js
@@ -10,8 +10,20 @@ define([
     'use strict';
 
     describe('ui/js/modal/confirm', function () {
-        var element = $('<div>some element</div>'),
+
+        var widget,
+            element,
+            confirm;
+
+        beforeEach(function () {
+            element = $('<div id="element">some element</div>');
             confirm = element.confirm({});
+            widget = element.confirm({}).data('mage-confirm');
+        });
+
+        afterEach(function () {
+            $('element').remove();
+        });
 
         it('Check for modal definition', function () {
             expect(confirm).toBeDefined();
@@ -23,5 +35,11 @@ define([
         it('Integration: modal created on page', function () {
             expect(confirm.length).toEqual(1);
         });
+        it('Check confirm class button', function () {
+            var expectedClassResult = 'action primary action-primary action-accept',
+                expectedClass = widget.options.buttons[1].class;
+
+            expect($(expectedClass).selector).toContain(expectedClassResult);
+        });
     });
 });