diff --git a/module/VuFind/tests/integration-tests/src/VuFindTest/Mink/AdvancedSearchTest.php b/module/VuFind/tests/integration-tests/src/VuFindTest/Mink/AdvancedSearchTest.php
index 0dd49d8291adc1e23fff9ee966e61c74b7129516..0c372fd778201c3c7c7609087c3f122257ed5e69 100644
--- a/module/VuFind/tests/integration-tests/src/VuFindTest/Mink/AdvancedSearchTest.php
+++ b/module/VuFind/tests/integration-tests/src/VuFindTest/Mink/AdvancedSearchTest.php
@@ -94,11 +94,6 @@ class AdvancedSearchTest extends \VuFindTest\Unit\MinkTestCase
      */
     public function testAdvancedSearch()
     {
-        // Change the theme:
-        $this->changeConfigs(
-            ['config' => ['Site' => ['theme' => 'bootstrap3']]]
-        );
-
         // Go to the advanced search page
         $session = $this->getMinkSession();
         $path = '/Search/Advanced';
diff --git a/module/VuFind/tests/integration-tests/src/VuFindTest/Mink/FavoritesTest.php b/module/VuFind/tests/integration-tests/src/VuFindTest/Mink/FavoritesTest.php
index c295995c77c53c9bdfa707b173712d0077afe63d..817b9c454349174d7cdd706cc3679bce6ae401e4 100644
--- a/module/VuFind/tests/integration-tests/src/VuFindTest/Mink/FavoritesTest.php
+++ b/module/VuFind/tests/integration-tests/src/VuFindTest/Mink/FavoritesTest.php
@@ -113,11 +113,6 @@ class FavoritesTest extends \VuFindTest\Unit\MinkTestCase
      */
     public function testAddRecordToFavoritesNewAccount()
     {
-        // Change the theme:
-        $this->changeConfigs(
-            ['config' => ['Site' => ['theme' => 'bootstrap3']]]
-        );
-
         $page = $this->gotoRecord();
 
         $this->findCss($page, '.save-record')->click();
@@ -170,11 +165,6 @@ class FavoritesTest extends \VuFindTest\Unit\MinkTestCase
      */
     public function testAddRecordToFavoritesLogin()
     {
-        // Change the theme:
-        $this->changeConfigs(
-            ['config' => ['Site' => ['theme' => 'bootstrap3']]]
-        );
-
         $page = $this->gotoRecord();
 
         $this->findCss($page, '.save-record')->click();
@@ -222,11 +212,6 @@ class FavoritesTest extends \VuFindTest\Unit\MinkTestCase
      */
     public function testAddRecordToFavoritesLoggedIn()
     {
-        // Change the theme:
-        $this->changeConfigs(
-            ['config' => ['Site' => ['theme' => 'bootstrap3']]]
-        );
-
         $page = $this->gotoRecord();
         // Login
         $this->findCss($page, '#loginOptions a')->click();
@@ -251,11 +236,6 @@ class FavoritesTest extends \VuFindTest\Unit\MinkTestCase
      */
     public function testAddSearchItemToFavoritesNewAccount()
     {
-        // Change the theme:
-        $this->changeConfigs(
-            ['config' => ['Site' => ['theme' => 'bootstrap3']]]
-        );
-
         $page = $this->gotoSearch();
 
         $this->findCss($page, '.save-record')->click();
@@ -319,11 +299,6 @@ class FavoritesTest extends \VuFindTest\Unit\MinkTestCase
      */
     public function testAddSearchItemToFavoritesLogin()
     {
-        // Change the theme:
-        $this->changeConfigs(
-            ['config' => ['Site' => ['theme' => 'bootstrap3']]]
-        );
-
         $page = $this->gotoSearch();
 
         $this->findCss($page, '.save-record')->click();
@@ -372,11 +347,6 @@ class FavoritesTest extends \VuFindTest\Unit\MinkTestCase
      */
     public function testAddSearchItemToFavoritesLoggedIn()
     {
-        // Change the theme:
-        $this->changeConfigs(
-            ['config' => ['Site' => ['theme' => 'bootstrap3']]]
-        );
-
         $page = $this->gotoSearch();
         // Login
         $this->findCss($page, '#loginOptions a')->click();
diff --git a/module/VuFind/tests/integration-tests/src/VuFindTest/Mink/RecordActionsTest.php b/module/VuFind/tests/integration-tests/src/VuFindTest/Mink/RecordActionsTest.php
index 2df87d867677a9ee024719aad1c24f0b83ddf421..35a0ba129601c166c9fe6c68d9ea6abaf99cdba0 100644
--- a/module/VuFind/tests/integration-tests/src/VuFindTest/Mink/RecordActionsTest.php
+++ b/module/VuFind/tests/integration-tests/src/VuFindTest/Mink/RecordActionsTest.php
@@ -102,11 +102,6 @@ class RecordActionsTest extends \VuFindTest\Unit\MinkTestCase
      */
     public function testAddComment()
     {
-        // Change the theme:
-        $this->changeConfigs(
-            ['config' => ['Site' => ['theme' => 'bootstrap3']]]
-        );
-
         // Go to a record view
         $page = $this->gotoRecord();
         // Click add comment without logging in
@@ -152,11 +147,6 @@ class RecordActionsTest extends \VuFindTest\Unit\MinkTestCase
      */
     public function testAddTag()
     {
-        // Change the theme:
-        $this->changeConfigs(
-            ['config' => ['Site' => ['theme' => 'bootstrap3']]]
-        );
-
         // Go to a record view
         $page = $this->gotoRecord();
         // Click to add tag
@@ -249,11 +239,10 @@ class RecordActionsTest extends \VuFindTest\Unit\MinkTestCase
      */
     public function testAddSensitiveTag()
     {
-        // Change the theme:
+        // Set up configs:
         $this->changeConfigs(
             [
                 'config' => [
-                    'Site' => ['theme' => 'bootstrap3'],
                     'Social' => ['case_sensitive_tags' => 'true']
                 ]
             ]
@@ -284,11 +273,10 @@ class RecordActionsTest extends \VuFindTest\Unit\MinkTestCase
      */
     public function testEmail()
     {
-        // Change the theme:
+        // Set up configs:
         $this->changeConfigs(
             [
                 'config' => [
-                    'Site' => ['theme' => 'bootstrap3'],
                     'Mail' => ['testOnly' => 1],
                 ]
             ]
@@ -357,11 +345,10 @@ class RecordActionsTest extends \VuFindTest\Unit\MinkTestCase
      */
     public function testSMS()
     {
-        // Change the theme:
+        // Set up configs:
         $this->changeConfigs(
             [
                 'config' => [
-                    'Site' => ['theme' => 'bootstrap3'],
                     'Mail' => ['testOnly' => 1],
                 ]
             ]