diff --git a/.github/workflows/build-windows.yml b/.github/workflows/build-windows.yml
index 522e4a1b099..84b8eca0f50 100644
--- a/.github/workflows/build-windows.yml
+++ b/.github/workflows/build-windows.yml
@@ -85,7 +85,8 @@ jobs:
       - name: Install (staging)
         run: |
           $build = "${{ github.workspace }}\build\WRelease"
-          $prefix = "$build\xilinx\xrt"
+          # Use forward slashes for prefix to avoid cmake_install.cmake syntax errors (backslash escape sequences)
+          $prefix = "${{ github.workspace }}/build/WRelease/xilinx/xrt"
           cmake --install $build --config Release --prefix $prefix --verbose
         shell: pwsh