diff --git a/README.md b/README.md
index c795dc7..cb80a32 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ Then add the following block at the end your project library:
 
 ```xml
 <Import Project="$(NuGetPackageRoot)uno.xamlmerge.task\$(_Uno_XamlMerge_Task_Version)\build\Uno.XamlMerge.Task.targets"
-        Condition="'$(TargetFramework)' == ''" />
+        Condition="'$(TargetFramework)' == '' and exists('$(NuGetPackageRoot)\uno.xamlmerge.task\$(_Uno_XamlMerge_Task_Version)')" />
 ```
 
 The generated file is called `Generated\mergedpages.xaml` by default, but can be overriden as follows: