diff --git a/FFMpegCore/FFMpeg/Pipes/PipeHelpers.cs b/FFMpegCore/FFMpeg/Pipes/PipeHelpers.cs
index 1b2ae9d..7e79f55 100644
--- a/FFMpegCore/FFMpeg/Pipes/PipeHelpers.cs
+++ b/FFMpegCore/FFMpeg/Pipes/PipeHelpers.cs
@@ -1,4 +1,5 @@
 using System;
+using System.IO;
 using System.Runtime.InteropServices;
 
 namespace FFMpegCore.Pipes