diff --git a/homeassistant/components/cover/tahoma.py b/homeassistant/components/cover/tahoma.py
index a4159721de7..fd2b5847292 100644
--- a/homeassistant/components/cover/tahoma.py
+++ b/homeassistant/components/cover/tahoma.py
@@ -62,6 +62,14 @@ class TahomaCover(TahomaDevice, CoverDevice):
         if self.current_cover_position is not None:
             return self.current_cover_position == 0
 
+    @property
+    def device_class(self):
+        """Return the class of the device."""
+        if self.tahoma_device.type == 'io:WindowOpenerVeluxIOComponent':
+            return 'window'
+        else:
+            return None
+
     def open_cover(self, **kwargs):
         """Open the cover."""
         self.apply_action('open')
@@ -77,10 +85,3 @@ class TahomaCover(TahomaDevice, CoverDevice):
             self.apply_action('setPosition', 'secured')
         else:
             self.apply_action('stopIdentify')
-
-    def device_class(self):
-        """Return the class of this device, from component DEVICE_CLASSES."""
-        if self.tahoma_device.type == 'io:WindowOpenerVeluxIOComponent':
-            return 'window'
-        else:
-            return None