diff --git a/src/eddn/Gateway.py b/src/eddn/Gateway.py
index 1a49e9a..0e007a3 100644
--- a/src/eddn/Gateway.py
+++ b/src/eddn/Gateway.py
@@ -351,7 +351,8 @@ class EnableCors(object):
     name = 'enable_cors'
     api = 2
 
-    def apply(self, fn, context):
+    @staticmethod
+    def apply(fn, context):
         """
         Apply CORS headers to the calling bottle app.