diff --git a/Formatter/SwaggerFormatter.php b/Formatter/SwaggerFormatter.php
index 02f56ad..a8bfe7c 100644
--- a/Formatter/SwaggerFormatter.php
+++ b/Formatter/SwaggerFormatter.php
@@ -322,6 +322,7 @@ class SwaggerFormatter implements FormatterInterface
         }
 
         $apiDeclaration['models'] = $this->modelRegistry->getModels();
+        $this->modelRegistry->clear();
 
         return $apiDeclaration;
     }
diff --git a/Swagger/ModelRegistry.php b/Swagger/ModelRegistry.php
index eaa98f8..327a274 100644
--- a/Swagger/ModelRegistry.php
+++ b/Swagger/ModelRegistry.php
@@ -34,8 +34,6 @@ class ModelRegistry
 
     protected $classes = array();
 
-    protected $classMap = array();
-
     /**
      * @var callable
      */
@@ -241,4 +239,10 @@ class ModelRegistry
     {
         return $this->models;
     }
+
+    public function clear()
+    {
+        $this->models = array();
+        $this->classes = array();
+    }
 }