diff --git a/src/phpFastCache/Cache/ExtendedCacheItemPoolInterface.php b/src/phpFastCache/Cache/ExtendedCacheItemPoolInterface.php
index <HASH>..<HASH> 100644
--- a/src/phpFastCache/Cache/ExtendedCacheItemPoolInterface.php
+++ b/src/phpFastCache/Cache/ExtendedCacheItemPoolInterface.php
@@ -121,7 +121,7 @@ interface ExtendedCacheItemPoolInterface extends CacheItemPoolInterface
      *   If any of the keys in $keys are not a legal value a \Psr\Cache\InvalidArgumentException
      *   MUST be thrown.
      *
-     * @return array|\Traversable
+     * @return ExtendedCacheItemInterface[]
      *   A traversable collection of Cache Items keyed by the cache keys of
      *   each item. A Cache item will be returned for each key, even if that
      *   key is not found. However, if no keys are specified then an empty
@@ -139,7 +139,7 @@ interface ExtendedCacheItemPoolInterface extends CacheItemPoolInterface
      *   If any of the keys in $keys are not a legal value a \Psr\Cache\InvalidArgumentException
      *   MUST be thrown.
      *
-     * @return array|\Traversable
+     * @return ExtendedCacheItemInterface[]
      *   A traversable collection of Cache Items keyed by the cache keys of
      *   each item. A Cache item will be returned for each key, even if that
      *   key is not found. However, if no keys are specified then an empty
Fixed wrong class name in ExtendedCacheItemPoolInterface