diff --git a/.github/workflows/build_cygwin_gap_release.yml b/.github/workflows/build_cygwin_gap_release.yml
index 6a166f3..e31bc6e 100644
--- a/.github/workflows/build_cygwin_gap_release.yml
+++ b/.github/workflows/build_cygwin_gap_release.yml
@@ -53,4 +53,5 @@ jobs:
       uses: actions/upload-artifact@v4
       with:
         name: GAP Windows installer - ${{ matrix.arch }}
-        path: Output/*
+        path: gap-windows/dist/*
+        if-no-files-found: error
diff --git a/gap.iss b/gap.iss
index 1265661..8917ae9 100755
--- a/gap.iss
+++ b/gap.iss
@@ -55,6 +55,7 @@ DisableProgramGroupPage=yes
 ; Uncomment the following line to run in non administrative install mode (install for current user only.)
 ;PrivilegesRequired=lowest
 PrivilegesRequiredOverridesAllowed=dialog
+OutputDir={#OutputDir}
 OutputBaseFilename=gap-{#MyAppVersion}-{#GapArch}
 Compression=lzma2
 LZMANumBlockThreads=6
diff --git a/release_gap.sh b/release_gap.sh
index b7ee9ad..7050672 100755
--- a/release_gap.sh
+++ b/release_gap.sh
@@ -92,7 +92,9 @@ echo "::endgroup::"
 # gap-prep-runtime
 echo "::group::gap-prep-runtime"
 mkdir -p $(dirname ${GAP_ROOT_RUNTIME})
-cp -rp ${GAP_ROOT_BUILD} $(dirname ${GAP_ROOT_RUNTIME})
+# Not -p: Cygwin cannot copy the ACLs of directories checked out by
+# Windows git, and the installer does not keep them anyway
+cp -r ${GAP_ROOT_BUILD} $(dirname ${GAP_ROOT_RUNTIME})
 # Prepare / compactify runtime environment
 tools/gap-prep-runtime "${GAP_ROOT_RUNTIME}" "${GAP_ROOT}"
 echo "::endgroup::"