diff --git a/platypush/backend/sensor/__init__.py b/platypush/backend/sensor/__init__.py
index 31cb35af..556a5cf9 100644
--- a/platypush/backend/sensor/__init__.py
+++ b/platypush/backend/sensor/__init__.py
@@ -174,7 +174,7 @@ class SensorBackend(Backend):
         if plugin and hasattr(plugin, 'close'):
             plugin.close()
 
-    def process_data(self, *, new_data, **_):
+    def process_data(self, new_data, *_, **__):
         if new_data is not None and new_data not in ({}, []):
             self.bus.post(SensorDataChangeEvent(data=new_data, source=self.plugin or self.__class__.__name__))