diff --git a/src/JsonSchema/Uri/Retrievers/PredefinedArray.php b/src/JsonSchema/Uri/Retrievers/PredefinedArray.php
index 1ded1d3..7652c42 100644
--- a/src/JsonSchema/Uri/Retrievers/PredefinedArray.php
+++ b/src/JsonSchema/Uri/Retrievers/PredefinedArray.php
@@ -3,7 +3,6 @@
 namespace JsonSchema\Uri\Retrievers;
 
 use JsonSchema\Validator;
-use JsonSchema\Uri\Retrievers\UriRetrieverInterface;
 
 /**
  * URI retrieved based on a predefined array of schemas
@@ -36,7 +35,7 @@ class PredefinedArray extends AbstractRetriever
         $this->schemas     = $schemas;
         $this->contentType = $contentType;
     }
-    
+
     /**
      * {@inheritDoc}
      * @see \JsonSchema\Uri\Retrievers\UriRetrieverInterface::retrieve()
@@ -52,4 +51,4 @@ class PredefinedArray extends AbstractRetriever
 
         return $this->schemas[$uri];
     }
-}
\ No newline at end of file
+}
diff --git a/src/JsonSchema/Validator.php b/src/JsonSchema/Validator.php
index 935311b..b1f3969 100644
--- a/src/JsonSchema/Validator.php
+++ b/src/JsonSchema/Validator.php
@@ -12,11 +12,6 @@ namespace JsonSchema;
 use JsonSchema\Constraints\SchemaConstraint;
 use JsonSchema\Constraints\Constraint;
 
-use JsonSchema\Exception\InvalidSchemaMediaTypeException;
-use JsonSchema\Exception\JsonDecodingException;
-
-use JsonSchema\Uri\Retrievers\UriRetrieverInterface;
-
 /**
  * A JsonSchema Constraint
  *