diff --git a/custom_components/dreame_vacuum/dreame/device.py b/custom_components/dreame_vacuum/dreame/device.py
index 01bbcf3..25fbbeb 100644
--- a/custom_components/dreame_vacuum/dreame/device.py
+++ b/custom_components/dreame_vacuum/dreame/device.py
@@ -6233,7 +6233,7 @@ def cleaning_history(self) -> dict[str, Any] | None:
                     list[date] = {
                         ATTR_TIMESTAMP: history.date.timestamp(),
                         ATTR_CLEANING_TIME: f"{history.cleaning_time} min",
-                        ATTR_CLEANED_AREA: f"{history.cleaned_area} m²",
+                        ATTR_CLEANED_AREA: f"{history.cleaned_area} m�",
                     }
                     if history.status is not None:
                         list[date][ATTR_STATUS] = (
@@ -7069,7 +7069,7 @@ def mac_address(self) -> Optional[str]:
     @property
     def manufacturer(self) -> str:
         """Manufacturer name."""
-        return "Dreametech™"
+        return "Dreametech�"
 
     @property
     def raw(self) -> dict[str, Any]: