diff --git a/src/eddn/Monitor.py b/src/eddn/Monitor.py
index 50f8304..3cdab9f 100644
--- a/src/eddn/Monitor.py
+++ b/src/eddn/Monitor.py
@@ -284,7 +284,8 @@ class EnableCors(object):
     name = 'enable_cors'
     api = 2
 
-    def apply(self, fn, context):
+    @staticmethod
+    def apply(fn, context):
         """
         Apply a CORS handler.