diff --git a/py/hexagram/cluster.py b/py/hexagram/cluster.py
index 6cd1e58..2269bf5 100644
--- a/py/hexagram/cluster.py
+++ b/py/hexagram/cluster.py
@@ -91,7 +91,7 @@ class Odometer(TextGauge):
         super().__init__(x, y, 0, 999999999, align)
 
     def format_text(self):
-        return "%d mi" % self.value
+        return "%.1f mi" % self.value
 
 class AmbientTemp(TextGauge):
     def __init__(self, x: float, y: float, align: Align):