diff --git a/touch_panel/panel.py b/touch_panel/panel.py
index 046d86e..c6c1edb 100755
--- a/touch_panel/panel.py
+++ b/touch_panel/panel.py
@@ -1026,8 +1026,8 @@ class TouchPanel(QMainWindow):
 
     def synology_disk_temp_detail(self, disk):
         value = self.synology_disk_temps.get(f"{disk}_TEMP", "")
-        if not value:
-            return "- C"
+        if not value or value == "-" or value == "0":
+            return ""
         return f"{value} C"
 
     def set_synology_net_tile(self, key, rx, tx, errors, drops, detail):