diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 9d63ab64b..257b9852e 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -162,7 +162,7 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php }}
-          coverage: ${{ matrix.coverage && 'xdebug' || 'none' }}
+          coverage: ${{ matrix.coverage && github.repository == 'PHPMailer/PHPMailer' && 'xdebug' || 'none' }}
           ini-values: sendmail_path=/usr/sbin/sendmail -t -i, error_reporting=E_ALL, display_errors=On
           extensions: ${{ steps.set_extensions.outputs.EXT }}
 
@@ -207,15 +207,15 @@ jobs:
           sudo cp test/fakesendmail.sh /usr/sbin/sendmail
 
       - name: Run tests, no code coverage
-        if: ${{ matrix.coverage == false }}
+        if: ${{ matrix.coverage == false || github.repository != 'PHPMailer/PHPMailer' }}
         run: ./vendor/bin/phpunit --no-coverage
 
       - name: Run tests with code coverage
-        if: ${{ matrix.coverage == true }}
+        if: ${{ matrix.coverage == true  && github.repository == 'PHPMailer/PHPMailer' }}
         run: vendor/bin/phpunit
 
       - name: Send coverage report to Codecov
-        if: ${{ success() && matrix.coverage == true }}
+        if: ${{ success() && matrix.coverage == true && github.repository == 'PHPMailer/PHPMailer' }}
         uses: codecov/codecov-action@v4
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}