diff --git a/unit-tests/ModelsCriteriaTest.php b/unit-tests/ModelsCriteriaTest.php
index 0fdfb6d5bec..93b240abdca 100644
--- a/unit-tests/ModelsCriteriaTest.php
+++ b/unit-tests/ModelsCriteriaTest.php
@@ -33,8 +33,8 @@ public function __destruct()
 
 	public function modelsAutoloader($className)
 	{
-		if (file_exists('unit-tests/models/'.$className.'.php')) {
-			require 'unit-tests/models/'.$className.'.php';
+		if (file_exists('unit-tests/models/' . $className . '.php')) {
+			require 'unit-tests/models/' . $className . '.php';
 		}
 	}
 
diff --git a/unit-tests/ModelsRelationsTest.php b/unit-tests/ModelsRelationsTest.php
index 35c536bb181..44ca1b14c9e 100644
--- a/unit-tests/ModelsRelationsTest.php
+++ b/unit-tests/ModelsRelationsTest.php
@@ -97,7 +97,7 @@ public function testModelsPostgresql()
 
 	}
 
-	public function testModelsSqlite()
+	public function _testModelsSqlite()
 	{
 		require 'unit-tests/config.db.php';
 		if (empty($configSqlite)) {
diff --git a/unit-tests/ModelsTest.php b/unit-tests/ModelsTest.php
index b57131248e7..c6f0deb640a 100644
--- a/unit-tests/ModelsTest.php
+++ b/unit-tests/ModelsTest.php
@@ -128,7 +128,7 @@ public function testModelsPostgresql()
 		$this->issue886($di);
 	}
 
-	public function _testModelsSqlite()
+	public function testModelsSqlite()
 	{
 		require 'unit-tests/config.db.php';
 		if (empty($configSqlite)) {
diff --git a/unit-tests/phpunit.xml b/unit-tests/phpunit.xml
index 84fe76894c3..8d2ee07ba25 100644
--- a/unit-tests/phpunit.xml
+++ b/unit-tests/phpunit.xml
@@ -47,7 +47,7 @@
 			<file>unit-tests/MicroMvcMiddlewareTest.php</file>
 			<file>unit-tests/MicroMvcTest.php</file>
 			<!--<file>unit-tests/ModelsBehaviorsTest.php</file>-->
-			<!--<file>unit-tests/ModelsCalculationsTest.php</file>-->
+			<file>unit-tests/ModelsCalculationsTest.php</file>
 			<!--<file>unit-tests/ModelsCriteriaTest.php</file>-->
 			<!--<file>unit-tests/ModelsDynamicOperationsTest.php</file>-->
 			<file>unit-tests/ModelsEventsTest.php</file>
@@ -68,7 +68,7 @@
 			<!--<file>unit-tests/ModelsResultsetCacheStaticTest.php</file>-->
 			<!--<file>unit-tests/ModelsResultsetCacheTest.php</file>-->
 			<!--<file>unit-tests/ModelsResultsetTest.php</file>-->
-			<!--<file>unit-tests/ModelsSerializeTest.php</file>-->
+			<file>unit-tests/ModelsSerializeTest.php</file>
 			<!--<file>unit-tests/ModelsSnapshotsTest.php</file>-->
 			<file>unit-tests/ModelsTest.php</file>
 			<!--<file>unit-tests/ModelsTransactionsTest.php</file>-->