diff --git a/tests/php/Search/DatabaseSearchEngineTest.php b/tests/php/Search/DatabaseSearchEngineTest.php
index 22ca9383..e4046304 100644
--- a/tests/php/Search/DatabaseSearchEngineTest.php
+++ b/tests/php/Search/DatabaseSearchEngineTest.php
@@ -13,6 +13,11 @@ class DatabaseSearchEngineTest extends SapphireTest
 {
     protected $usesDatabase = true;
 
+    /**
+     * @var bool InnoDB doesn't update indexes until transactions are committed
+     */
+    protected $usesTransactions = false;
+
     public static function setUpBeforeClass()
     {
         parent::setUpBeforeClass();
@@ -46,5 +51,4 @@ class DatabaseSearchEngineTest extends SapphireTest
             $results->First()->Title
         );
     }
-
 }
diff --git a/tests/php/Search/SearchFormTest.php b/tests/php/Search/SearchFormTest.php
index 65932e96..96d47219 100644
--- a/tests/php/Search/SearchFormTest.php
+++ b/tests/php/Search/SearchFormTest.php
@@ -44,6 +44,11 @@ class ZZZSearchFormTest extends FunctionalTest
      */
     protected $mockController;
 
+    /**
+     * @var bool InnoDB doesn't update indexes until transactions are committed
+     */
+    protected $usesTransactions = false;
+
     public function waitUntilIndexingFinished()
     {
         $schema = DB::get_schema();