diff --git a/homeassistant/components/vacuum/__init__.py b/homeassistant/components/vacuum/__init__.py
index 7ef2e3889a9..111fa64f988 100644
--- a/homeassistant/components/vacuum/__init__.py
+++ b/homeassistant/components/vacuum/__init__.py
@@ -249,7 +249,7 @@ class VacuumEntity(_BaseVacuum, ToggleEntity):
     @property
     def capability_attributes(self):
         """Return capability attributes."""
-        if self.fan_speed is not None:
+        if self.supported_features & SUPPORT_FAN_SPEED:
             return {ATTR_FAN_SPEED_LIST: self.fan_speed_list}
 
     @property
@@ -316,8 +316,7 @@ class VacuumDevice(VacuumEntity):
         """Print deprecation warning."""
         super().__init_subclass__(**kwargs)
         _LOGGER.warning(
-            "VacuumDevice is deprecated, modify %s to extend VacuumEntity",
-            cls.__name__,
+            "VacuumDevice is deprecated, modify %s to extend VacuumEntity", cls.__name__
         )
 
 
@@ -341,7 +340,7 @@ class StateVacuumEntity(_BaseVacuum):
     @property
     def capability_attributes(self):
         """Return capability attributes."""
-        if self.fan_speed is not None:
+        if self.supported_features & SUPPORT_FAN_SPEED:
             return {ATTR_FAN_SPEED_LIST: self.fan_speed_list}
 
     @property