diff --git a/Samples/MachineJob/MachineJob.csproj b/Samples/MachineJob/MachineJob.csproj
index 70fedb1..882d88b 100644
--- a/Samples/MachineJob/MachineJob.csproj
+++ b/Samples/MachineJob/MachineJob.csproj
@@ -24,7 +24,6 @@
 
   <ItemGroup>
     <ProjectReference Include="..\..\Modbus.Net\Modbus.Net.Modbus\Modbus.Net.Modbus.csproj" />
-    <ProjectReference Include="..\..\Modbus.Net\Modbus.Net.OPC\Modbus.Net.Opc.csproj" />
     <ProjectReference Include="..\..\Modbus.Net\Modbus.Net.Siemens\Modbus.Net.Siemens.csproj" />
     <ProjectReference Include="..\..\Modbus.Net\Modbus.Net\Modbus.Net.csproj" />
     <ProjectReference Include="..\MachineJob.CodeGenerator\MachineJob.CodeGenerator.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />