diff --git a/ModbusThermometer.cpp b/ModbusThermometer.cpp
index 503157f..d68750c 100644
--- a/ModbusThermometer.cpp
+++ b/ModbusThermometer.cpp
@@ -66,18 +66,18 @@ struct {
 		float in;
 		uint16_t modbusRegisters[2]; // 14, 15
  	} adc2R;
-	union {
-		uint32_t in;
-		uint16_t modbusRegisters[2]; // 16, 17
-	} uptimeSeconds;
 	union {
 		float in;
-		uint16_t modbusRegisters[2]; // 18, 19
+		uint16_t modbusRegisters[2]; // 16, 17
 	} temperature2Raw;
 	union {
 		float in;
-		uint16_t modbusRegisters[2]; // 20, 21
+		uint16_t modbusRegisters[2]; // 18, 19
 	} temperature2;
+	union {
+		uint32_t in;
+		uint16_t modbusRegisters[2]; // 20, 21
+	} uptimeSeconds;
 } modbusHoldingRegisters;