diff --git a/pylti/common.py b/pylti/common.py
index c7c3d8a..08200a1 100644
--- a/pylti/common.py
+++ b/pylti/common.py
@@ -546,7 +546,6 @@ def role(self):  # pylint: disable=no-self-use
         """
         return self.session.get('roles')
 
-    @staticmethod
     def is_role(self, role):
         """
         Verify if user is in role