diff --git a/core/src/main/java/me/retrodaredevil/io/modbus/handling/ReadInputRegisters.java b/core/src/main/java/me/retrodaredevil/io/modbus/handling/ReadInputRegisters.java
index d83daff..3016416 100644
--- a/core/src/main/java/me/retrodaredevil/io/modbus/handling/ReadInputRegisters.java
+++ b/core/src/main/java/me/retrodaredevil/io/modbus/handling/ReadInputRegisters.java
@@ -5,7 +5,7 @@
 
 public class ReadInputRegisters extends BaseReadRegisters {
 	public ReadInputRegisters(int startingDataAddress, int numberOfRegisters) {
-		super(startingDataAddress, FunctionCode.READ_HOLDING_REGISTERS, numberOfRegisters);
+		super(startingDataAddress, FunctionCode.READ_INPUT_REGISTERS, numberOfRegisters);
 	}
 	public static ReadInputRegisters parseFromRequestData(int[] data) throws MessageParseException {
 		if (data.length != 4) {