diff --git a/src/Runner/PlainTextTracer.php b/src/Runner/PlainTextTracer.php
index a1fcc7e23b6..9b7cb8d669c 100644
--- a/src/Runner/PlainTextTracer.php
+++ b/src/Runner/PlainTextTracer.php
@@ -43,7 +43,7 @@ public function trace(Event $event): void
         file_put_contents(
             $this->path,
             $telemetryInfo . implode($indentation, $lines) . PHP_EOL,
-            FILE_APPEND|LOCK_EX
+            FILE_APPEND | LOCK_EX
         );
     }
 
diff --git a/src/Util/Printer.php b/src/Util/Printer.php
index 14522296d86..4921bcdd7fc 100644
--- a/src/Util/Printer.php
+++ b/src/Util/Printer.php
@@ -92,7 +92,7 @@ public function write(string $buffer): void
         assert($this->isOpen);
 
         if (PHP_SAPI !== 'cli' && PHP_SAPI !== 'phpdbg' && $this->isPhpStream) {
-            $buffer = htmlspecialchars($buffer, ENT_COMPAT|ENT_SUBSTITUTE);
+            $buffer = htmlspecialchars($buffer, ENT_COMPAT | ENT_SUBSTITUTE);
         }
 
         fwrite($this->stream, $buffer);
diff --git a/tests/_files/mock-object/InterfaceWithMethodsThatDeclareBooleanReturnTypes.php b/tests/_files/mock-object/InterfaceWithMethodsThatDeclareBooleanReturnTypes.php
index 3258280a821..b40bfe359f0 100644
--- a/tests/_files/mock-object/InterfaceWithMethodsThatDeclareBooleanReturnTypes.php
+++ b/tests/_files/mock-object/InterfaceWithMethodsThatDeclareBooleanReturnTypes.php
@@ -11,7 +11,7 @@
 
 interface InterfaceWithMethodsThatDeclareBooleanReturnTypes
 {
-    public function returnsIntOrFalse(): int | false;
+    public function returnsIntOrFalse(): int|false;
 
     public function returnsBool(): bool;
 }