diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c408c9ee..e985fd4c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -695,8 +695,8 @@ jobs:
           cd "${gampath}/.."
           GAM_ARCHIVE="${GITHUB_WORKSPACE}/gam-${GAMVERSION}-windows-${GAM_ARCHIVE_ARCH}.zip"
           /c/Program\ Files/7-Zip/7z.exe a -tzip "$GAM_ARCHIVE" gam7 "-xr@${GITHUB_WORKSPACE}/.github/actions/package_exclusions.txt" -bb3
-          cd "${GITHUB_WORKSPACE}/src"
-          export MSI_FILENAME="gam-${GAMVERSION}-windows-${GAM_ARCHIVE_ARCH}.msi"
+          cd "../.."
+          export MSI_FILENAME="${GITHUB_WORKSPACE}/src/gam-${GAMVERSION}-windows-${GAM_ARCHIVE_ARCH}.msi"
           # auto-generate a lib.wxs based on the files PyInstaller created for the lib/ directory
           /c/Program\ Files\ \(x86\)/WiX\ Toolset\ v3.14/bin/heat.exe dir "${gampath}/lib" -ke -srd -cg Lib -gg -dr lib -directoryid lib -out lib.wxs
           /c/Program\ Files\ \(x86\)/WiX\ Toolset\ v3.14/bin/candle.exe -arch "${WIX_ARCH}" gam.wxs lib.wxs