diff --git a/src/pyatmo/modules/base_class.py b/src/pyatmo/modules/base_class.py
index 72e457e9..41701547 100644
--- a/src/pyatmo/modules/base_class.py
+++ b/src/pyatmo/modules/base_class.py
@@ -35,11 +35,12 @@ def default(key: str, val: Any) -> Any:
     return lambda x, _: x.get(key, val)
 
 
-def deduplicate(data: str) -> str:
+def update_name(name: str, pre_fix: str) -> str:
     """Remove duplicates from string."""
-    seen: set[str] = set()
-    seen_add = seen.add
-    return " ".join([x for x in data.split() if not (x in seen or seen_add(x))])
+
+    if name.startswith(pre_fix):
+        return name
+    return f"{pre_fix} {name}"
 
 
 class EntityBase:
@@ -69,9 +70,7 @@ def update_topology(self, raw_data: RawData) -> None:
             and self.bridge in self.home.modules
             and getattr(self, "device_category") == "weather"
         ):
-            self.name = deduplicate(
-                f"{self.home.modules[self.bridge].name} {self.name}",
-            )
+            self.name = update_name(self.name, self.home.modules[self.bridge].name)
 
     def _update_attributes(self, raw_data: RawData) -> None:
         """Update attributes."""