diff --git a/csharp/Lib/Protocols/Modbus/Clients/ModbusClient.cs b/csharp/Lib/Protocols/Modbus/Clients/ModbusClient.cs
index 230a49a2d..acb13d413 100644
--- a/csharp/Lib/Protocols/Modbus/Clients/ModbusClient.cs
+++ b/csharp/Lib/Protocols/Modbus/Clients/ModbusClient.cs
@@ -28,7 +28,7 @@ public abstract class ModbusClient
     public abstract MbData ReadWriteRegisters  (UInt16 readAddress,  
                                                 UInt16 nbToRead, 
                                                 UInt16 writeAddress, 
-                                               UInt16s registersToWrite);
+                                                UInt16s registersToWrite);
     
     protected ModbusClient(Channel channel, Byte slaveId, Endian endian = Endian.Little)
     {