diff --git a/EventListener/DebugHandlersListener.php b/EventListener/DebugHandlersListener.php
index cfc277e330..5027bd1169 100644
--- a/EventListener/DebugHandlersListener.php
+++ b/EventListener/DebugHandlersListener.php
@@ -60,7 +60,7 @@ public function __construct(callable $exceptionHandler = null, LoggerInterface $
 
         $this->exceptionHandler = $exceptionHandler;
         $this->logger = $logger;
-        $this->levels = null === $levels ? \E_ALL : $levels;
+        $this->levels = $levels ?? \E_ALL;
         $this->throwAt = \is_int($throwAt) ? $throwAt : (null === $throwAt ? null : ($throwAt ? \E_ALL : null));
         $this->scream = $scream;
         $this->fileLinkFormat = $fileLinkFormat;
diff --git a/Profiler/Profile.php b/Profiler/Profile.php
index ac5b5044c1..88e82b4e2f 100644
--- a/Profiler/Profile.php
+++ b/Profiler/Profile.php
@@ -156,11 +156,7 @@ public function setUrl($url)
      */
     public function getTime()
     {
-        if (null === $this->time) {
-            return 0;
-        }
-
-        return $this->time;
+        return $this->time ?? 0;
     }
 
     /**
diff --git a/Tests/KernelTest.php b/Tests/KernelTest.php
index 63fb4973f6..ec57289dde 100644
--- a/Tests/KernelTest.php
+++ b/Tests/KernelTest.php
@@ -709,7 +709,7 @@ protected function getBundle($dir = null, $parent = null, $className = null, $bu
         $bundle
             ->expects($this->any())
             ->method('getName')
-            ->willReturn(null === $bundleName ? \get_class($bundle) : $bundleName)
+            ->willReturn($bundleName ?? \get_class($bundle))
         ;
 
         $bundle