diff --git a/check-health b/check-health
index d1b45d5..8dfbc16 100644
--- a/check-health
+++ b/check-health
@@ -19,10 +19,7 @@
 
 :local FormatVoltage do={
   :local Voltage [ :tonum $1 ];
-  :if ($Voltage < 10) do={
-    :return ("0." . $Voltage . "V");
-  }
-  :return (($Voltage / 10) . "." . ($Voltage % ($Voltage / 10 * 10)) . "V");
+  :return (($Voltage / 10) . "." . [ :pick $Voltage ([ :len $Voltage ] - 1) ] . "V");
 }
 
 :local CheckHealthCurrent [ / system health get ];