diff --git a/src/Windows/Perspex.Designer/README.txt b/src/Windows/Perspex.Designer/README.txt
index 565bfa965b..1dec6c88b0 100644
--- a/src/Windows/Perspex.Designer/README.txt
+++ b/src/Windows/Perspex.Designer/README.txt
@@ -1,3 +1,3 @@
 To load data from XamlTestApplication run with:
 
---exe=..\..\..\..\..\samples\XamlTestApplication\bin\Debug --xaml=..\..\..\..\..\samples\XamlTestApplication\Views\MainWindow.xaml
\ No newline at end of file
+--exe=..\..\..\..\..\samples\XamlTestApplication\bin\Debug\XamlTestApplication.exe --xaml=..\..\..\..\..\samples\XamlTestApplication\Views\MainWindow.xaml
\ No newline at end of file