diff --git a/flask_images/core.py b/flask_images/core.py
index 8682604..16a4cb4 100755
--- a/flask_images/core.py
+++ b/flask_images/core.py
@@ -429,7 +429,7 @@ def handle_request(self, path):
             image.save(cache_file, format, quality=quality)
             cache_file.close()
         
-        return send_file(cache_path, mimetype=mimetype, cache_timeout=cache_timeout)
+        return send_file(cache_path, mimetype=mimetype, max_age=cache_timeout)
 
 
 
diff --git a/setup.py b/setup.py
index 453a02f..ebbe653 100644
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,7 @@
 setup(
 
     name='Flask-Images',
-    version='3.0.2',
+    version='3.0.3',
     description='Dynamic image resizing for Flask.',
     url='http://github.com/mikeboers/Flask-Images',