diff --git a/Elwig/Helpers/Weighing/SystecScale.cs b/Elwig/Helpers/Weighing/SystecScale.cs
index a8a277a..ec34e09 100644
--- a/Elwig/Helpers/Weighing/SystecScale.cs
+++ b/Elwig/Helpers/Weighing/SystecScale.cs
@@ -164,7 +164,7 @@ namespace Elwig.Helpers.Weighing {
             var crc16      = line[52..60].Trim();
 
             if (Utils.CalcCrc16Modbus(record[..54]) != ushort.Parse(crc16)) {
-                throw new IOException($"Invalid response from scale: Invalid CRC16 checksum ({crc16} != {Utils.CalcCrc16Modbus(record[..54]).ToString()})");
+                throw new IOException($"Invalid response from scale: Invalid CRC16 checksum ({crc16} != {Utils.CalcCrc16Modbus(record[..54])})");
             } else if (unit != "kg") {
                 throw new IOException($"Unsupported unit in weighing response: '{unit}'");
             }