diff --git a/packaging/win/sign.proj b/packaging/win/sign.proj
index 01780030..c231e092 100644
--- a/packaging/win/sign.proj
+++ b/packaging/win/sign.proj
@@ -1,6 +1,6 @@
 <Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
-    <RootPath>$(MSBuildThisFileDirectory)\..\src\ptvsd\</RootPath>
+    <RootPath>$(MSBuildThisFileDirectory)\..\..\src\ptvsd\</RootPath>
   </PropertyGroup>
   
   <PropertyGroup Condition="$(BUILD_BINARIESDIRECTORY) != ''">