diff --git a/Monitor/Src/Options.cs b/Monitor/Src/Options.cs
index a0f3274..9cf702d 100644
--- a/Monitor/Src/Options.cs
+++ b/Monitor/Src/Options.cs
@@ -1,5 +1,5 @@
 using CommandLine;
-using RJCP.IO.Ports;
+using System.IO.Ports;
 using ComMonitor.Serial;
 
 namespace ComMonitor.Main {