diff --git a/psake.ps1 b/psake.ps1
index d5e8a97..0082ca1 100644
--- a/psake.ps1
+++ b/psake.ps1
@@ -54,10 +54,7 @@ Task Test -Depends UnitTests  {
     {
         "Uploading $ProjectRoot\$TestFile to AppVeyor"
         "JobID: $env:APPVEYOR_JOB_ID"
-        (New-Object 'System.Net.WebClient').UploadFile(
-            "https://ci.appveyor.com/api/testresults/nunit/$($env:APPVEYOR_JOB_ID)",
-            "$ProjectRoot\$TestFile"
-        )
+        (New-Object 'System.Net.WebClient').UploadFile("https://ci.appveyor.com/api/testresults/nunit/$($env:APPVEYOR_JOB_ID)", (Resolve-Path "$ProjectRoot\$TestFile"))
     }
 
     Remove-Item "$ProjectRoot\$TestFile" -Force -ErrorAction SilentlyContinue