diff --git a/fritz_temp_sync/config.yaml b/fritz_temp_sync/config.yaml
index 76c7d75..86adf70 100755
--- a/fritz_temp_sync/config.yaml
+++ b/fritz_temp_sync/config.yaml
@@ -1,6 +1,6 @@
 name: "Fritz!Box Temperature Sync Dev"
 description: "Sync Fritz!DECT thermostat temperatures with other sensors in Home Assistant"
-version: "0.5.0"
+version: "0.5.1"
 startup: "application"
 stage: "stable"
 slug: "fritz_temp_sync_dev"
diff --git a/fritz_temp_sync/fritzbox.py b/fritz_temp_sync/fritzbox.py
index f43c8ee..61b5e45 100755
--- a/fritz_temp_sync/fritzbox.py
+++ b/fritz_temp_sync/fritzbox.py
@@ -176,7 +176,12 @@ class FritzBox:
 
             name = name[0].string
             id = int(button[0].button["value"])
-            temperature = float(temperature[0].string.split(" ")[0].replace(",", "."))
+            print("Temperature raw:", temperature)
+            try:
+                temperature = float(temperature[0].string.split(" ")[0].replace(",", "."))
+            except:
+                print("Error parsing temperature.")
+                return []
 
             request_data = {
                 "device": id,
@@ -185,7 +190,8 @@ class FritzBox:
             }
 
             r = self.session.get(f"{self.url}/{self._endpoints['device_details']}", params=request_data,
-                                 verify=self.verify_ssl)
+                                         verify=self.verify_ssl)
+
             device_content_raw = BeautifulSoup(r.text, "html.parser")
             offset = float(device_content_raw.find("input", {"type": "hidden", "name": "Offset"})["value"])
             devices_raw.append({
@@ -303,16 +309,20 @@ class FritzBox:
             if device is None:
                 return
 
+            offset_changed = False
             if self.old_fb:
                 new_offset = device["offset"] + real_temp - device["temperature"]
-                logging.info(f"Update offset from {device['offset']} to {new_offset}")
+                offset_changed = new_offset != device["offset"]
+                logging.info(f"Update offset from {device['offset']} to {new_offset} (changed: {offset_changed}")
             else:
                 new_offset = device.get_offset() + real_temp - device.get_temperature()
-                logging.info(f"Update offset from {device.get_offset()} to {new_offset}")
+                offset_changed = new_offset != device.get_offset()
+                logging.info(f"Update offset from {device.get_offset()} to {new_offset} (changed: {offset_changed}")
 
-            if self.old_fb:
-                device["offset"] = new_offset
-            else:
-                device.set_offset(new_offset)
-            self.set_offset(device)
-            self.update_time[device_name] = datetime.now()
+            if offset_changed:
+                if self.old_fb:
+                    device["offset"] = new_offset
+                else:
+                    device.set_offset(new_offset)
+                self.set_offset(device)
+                self.update_time[device_name] = datetime.now()