diff --git a/src/Pool.php b/src/Pool.php
index 5388fa54..95afc2ee 100644
--- a/src/Pool.php
+++ b/src/Pool.php
@@ -24,7 +24,7 @@ class Pool implements ArrayAccess
     /** @var \Spatie\Async\ParallelProcess[] */
     protected $failed = [];
 
-    /** @var \Spatie\Async\ParallelProcess[]  */
+    /** @var \Spatie\Async\ParallelProcess[] */
     protected $timeouts = [];
 
     protected $results = [];
diff --git a/src/PoolDebugger.php b/src/PoolDebugger.php
index f0ec13e7..07077178 100644
--- a/src/PoolDebugger.php
+++ b/src/PoolDebugger.php
@@ -8,8 +8,8 @@ class PoolDebugger
 {
     public static function statusForPool(Pool $pool): string
     {
-        return self::summaryForPool($pool) . "\n"
-            . self::statusForFailed($pool);
+        return self::summaryForPool($pool)."\n"
+            .self::statusForFailed($pool);
     }
 
     public static function summaryForPool(Pool $pool): string
@@ -18,9 +18,9 @@ public static function summaryForPool(Pool $pool): string
         $failed = $pool->getFailed();
         $timeouts = $pool->getTimeouts();
 
-        return 'finished: ' . count($finished)
-            . ' - failed: ' . count($failed)
-            . ' - timeouts: ' . count($timeouts);
+        return 'finished: '.count($finished)
+            .' - failed: '.count($failed)
+            .' - timeouts: '.count($timeouts);
     }
 
     public static function statusForFailed(Pool $pool): string
@@ -33,7 +33,7 @@ public static function statusForFailed(Pool $pool): string
             $output = $process->getErrorOutput();
 
             if ($output instanceof SerializableException) {
-                $output = get_class($output->asThrowable()) . ' ' . $output->asThrowable()->getMessage();
+                $output = get_class($output->asThrowable()).' '.$output->asThrowable()->getMessage();
             }
 
             $status .= "{$process->getId()} failed with {$output}\n\n";
diff --git a/tests/PoolTest.php b/tests/PoolTest.php
index 163f3cba..865a57ab 100644
--- a/tests/PoolTest.php
+++ b/tests/PoolTest.php
@@ -33,7 +33,7 @@ public function it_can_run_processes_in_parallel()
 
         $executionTime = $endTime - $startTime;
 
-        $this->assertLessThan(0.2, $executionTime, "Execution time was {$executionTime}, expected less than 0.2.\n" . PoolDebugger::statusForPool($pool));
+        $this->assertLessThan(0.2, $executionTime, "Execution time was {$executionTime}, expected less than 0.2.\n".PoolDebugger::statusForPool($pool));
     }
 
     /** @test */
@@ -115,7 +115,7 @@ public function it_can_handle_a_maximum_of_concurrent_processes()
 
         $executionTime = $endTime - $startTime;
 
-        $this->assertGreaterThanOrEqual(2, $executionTime, "Execution time was {$executionTime}, expected more than 2.\n" . PoolDebugger::statusForPool($pool));
+        $this->assertGreaterThanOrEqual(2, $executionTime, "Execution time was {$executionTime}, expected more than 2.\n".PoolDebugger::statusForPool($pool));
         $this->assertCount(3, $pool->getFinished(), PoolDebugger::statusForPool($pool));
     }