diff --git a/lib/towerops_web/live/device_live/show.html.heex b/lib/towerops_web/live/device_live/show.html.heex
index 2a18adf3..88e187eb 100644
--- a/lib/towerops_web/live/device_live/show.html.heex
+++ b/lib/towerops_web/live/device_live/show.html.heex
@@ -613,7 +613,7 @@
                               sensor.latest_reading.value,
                               sensor.sensor_divisor
                             )}
-                            {sensor.sensor_unit}
+                            {sensor.sensor_unit || "°C"}
                           <% else %>
                             N/A
                           <% end %>