diff --git a/appveyor.yml b/appveyor.yml
index 58058dc87..990ef37a1 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -361,8 +361,7 @@ for:
     - ps: |
         Invoke-WebRequest -Uri "https://gist.githubusercontent.com/dismine/43f3c51e05f3317c5d4fe16cd3c4b6d8/raw/2d297bcb53c2c022f740509923adf1eb1796afe2/qbs-pkg-config-probe.patch" -OutFile "$env:USERPROFILE\qbs-pkg-config-probe.patch"
         $qbsInstallationDir = "C:\ProgramData\chocolatey\lib\qbs\tools"
-        cd $qbsInstallationDir
-        cmd.exe /c "patch -p1 -N -d . -i $env:USERPROFILE\qbs-pkg-config-probe.patch"
+        cmd.exe /c "patch -p1 -N -d $qbsInstallationDir -i $env:USERPROFILE\qbs-pkg-config-probe.patch"
         Remove-Item -Path "$qbsInstallationDir\share\qbs\imports\qbs\Probes\qbs-pkg-config-probe.js.rej" -ErrorAction SilentlyContinue
         Remove-Item -Path "$env:USERPROFILE\qbs-pkg-config-probe.patch" -ErrorAction SilentlyContinue