diff --git a/src/Internal/PCI.php b/src/Internal/PCI.php
index ceb3184..a8e3d70 100644
--- a/src/Internal/PCI.php
+++ b/src/Internal/PCI.php
@@ -10,7 +10,7 @@
 
 /**
  * Property-Cache interface.
- * 
+ *
  * @internal
  */
 class PCI implements \ArrayAccess
@@ -101,7 +101,7 @@ public function offsetSet($offset, $value)
 
     /**
      * @throws InvalidKeyException
-     */ 
+     */
     public function offsetUnset($offset)
     {
         $this->cache->remove($offset);