diff --git a/package/win/package_win32.ps1 b/package/win/package_win32.ps1
index 45bfa7189..a21ebf74e 100644
--- a/package/win/package_win32.ps1
+++ b/package/win/package_win32.ps1
@@ -29,11 +29,13 @@ git branch | foreach {
    }
 }
 
+# Use absolute paths because apparently the zip calls below do
 if ($env:APPVEYOR) {
-    $output_dir = "../../Slic3r-${current_branch}.${current_date}.${env:APPVEYOR_BUILD_NUMBER}.$(git rev-parse --short HEAD)"
+    $output_dir = "${pwd}\..\..\Slic3r-${current_branch}.${current_date}.${env:APPVEYOR_BUILD_NUMBER}.$(git rev-parse --short HEAD)"
 } else {
-    $output_dir = "../../Slic3r-${current_branch}.${current_date}.$(git rev-parse --short HEAD)"
+    $output_dir = "${pwd}\..\..\Slic3r-${current_branch}.${current_date}.$(git rev-parse --short HEAD)"
 }
+mkdir $output_dir
 
 copy slic3r.exe $output_dir\Slic3r.exe
 copy slic3r-console.exe $output_dir\Slic3r-console.exe