diff --git a/companion/src/modeledit/telemetry.cpp b/companion/src/modeledit/telemetry.cpp
index 3e03573c0..20ca27242 100644
--- a/companion/src/modeledit/telemetry.cpp
+++ b/companion/src/modeledit/telemetry.cpp
@@ -688,6 +688,9 @@ void TelemetrySensorPanel::on_unit_currentIndexChanged(int index)
 {
   if (!lock) {
     sensor.unit = index;
+    if (sensor.unit == SensorData::UNIT_FAHRENHEIT) {
+      sensor.prec = 0;
+    }
     update();
     emit modified();
   }