diff --git a/.github/workflows/ccpp_mac.yml b/.github/workflows/ccpp_mac.yml
index 61a6ecbc2..0da9647c6 100644
--- a/.github/workflows/ccpp_mac.yml
+++ b/.github/workflows/ccpp_mac.yml
@@ -53,7 +53,9 @@ jobs:
         cp -Rf ../resources Slic3r++/Slic3r++.app/Contents/resources
         cp Slic3r++/Slic3r++.app/Contents/resources/icons/slic3r.icns Slic3r++/Slic3r++.app/Contents/resources/slic3r.icns
         cp src/Info.date.plist Slic3r++/Slic3r++.app/Contents/Info.plist
-        echo -n -e '\xff\xfeAPPL\x3f\x00\x3f\x00\x3f\x00\x3f\x00\x0a\x00' > PkgInfo
+        echo -n -e 'APPL????\x0a' > PkgInfo
+        cp PkgInfo Slic3r++/Slic3r++.app/Contents/PkgInfo
+#        echo -n -e '\xff\xfeAPPL\x3f\x00\x3f\x00\x3f\x00\x3f\x00\x0a\x00' > PkgInfo
     - name: copy bin
       working-directory: ./build
       run: |
diff --git a/.github/workflows/ccpp_ubuntu.yml b/.github/workflows/ccpp_ubuntu.yml
index 02213294a..488db23be 100644
--- a/.github/workflows/ccpp_ubuntu.yml
+++ b/.github/workflows/ccpp_ubuntu.yml
@@ -59,5 +59,5 @@ jobs:
     - name: Upload artifact
       uses: actions/upload-artifact@v1.0.0
       with:
-        name: nightly_linux
+        name: nightly_linux.tar
         path: build/slic3r++.tar