diff --git a/tests/phpstan/rules/DisallowEnumComparisonRule.php b/tests/phpstan/rules/DisallowEnumComparisonRule.php
index 726c4cfbfe..ec5ad3528b 100644
--- a/tests/phpstan/rules/DisallowEnumComparisonRule.php
+++ b/tests/phpstan/rules/DisallowEnumComparisonRule.php
@@ -47,7 +47,7 @@ class DisallowEnumComparisonRule implements Rule{
 	}
 
 	public function processNode(Node $node, Scope $scope) : array{
-		if(!($node instanceof Identical) and !($node instanceof NotIdentical)){
+		if(!($node instanceof Identical) && !($node instanceof NotIdentical)){
 			return [];
 		}
 
@@ -81,7 +81,7 @@ class DisallowEnumComparisonRule implements Rule{
 				continue;
 			}
 			$class = $containedType->getClassReflection();
-			if($class !== null and $class->hasTraitUse(EnumTrait::class)){
+			if($class !== null && $class->hasTraitUse(EnumTrait::class)){
 				return true;
 			}
 		}
diff --git a/tests/phpunit/item/ItemTest.php b/tests/phpunit/item/ItemTest.php
index 95aafd8a70..db29f14dc0 100644
--- a/tests/phpunit/item/ItemTest.php
+++ b/tests/phpunit/item/ItemTest.php
@@ -99,7 +99,7 @@ class ItemTest extends TestCase{
 		}
 		foreach($this->item->getEnchantments() as $enchantment){
 			foreach($enchantments as $k => $applied){
-				if($enchantment->getType() === $applied->getType() and $enchantment->getLevel() === $applied->getLevel()){
+				if($enchantment->getType() === $applied->getType() && $enchantment->getLevel() === $applied->getLevel()){
 					unset($enchantments[$k]);
 					continue 2;
 				}
diff --git a/tests/phpunit/scheduler/AsyncPoolTest.php b/tests/phpunit/scheduler/AsyncPoolTest.php
index e2aedfb939..878e99048c 100644
--- a/tests/phpunit/scheduler/AsyncPoolTest.php
+++ b/tests/phpunit/scheduler/AsyncPoolTest.php
@@ -54,7 +54,7 @@ class AsyncPoolTest extends TestCase{
 	public function testTaskLeak() : void{
 		$start = microtime(true);
 		$this->pool->submitTask(new LeakTestAsyncTask());
-		while(!LeakTestAsyncTask::$destroyed and microtime(true) < $start + 30){
+		while(!LeakTestAsyncTask::$destroyed && microtime(true) < $start + 30){
 			usleep(50 * 1000);
 			$this->pool->collectTasks();
 		}
diff --git a/tests/plugins/TesterPlugin/src/Test.php b/tests/plugins/TesterPlugin/src/Test.php
index 7af551840a..ce08c4a8da 100644
--- a/tests/plugins/TesterPlugin/src/Test.php
+++ b/tests/plugins/TesterPlugin/src/Test.php
@@ -72,7 +72,7 @@ abstract class Test{
 	}
 
 	public function isTimedOut() : bool{
-		return !$this->isFinished() and time() - $this->timeout > $this->startTime;
+		return !$this->isFinished() && time() - $this->timeout > $this->startTime;
 	}
 
 	protected function setTimeout(int $timeout) : void{