diff --git a/build.sh b/build.sh
index 073031bd95..7f0b393969 100755
--- a/build.sh
+++ b/build.sh
@@ -127,7 +127,6 @@ rm -rf $plugin_name/vendor-prefixed/swiftmailer/swiftmailer/tests
 rm -rf $plugin_name/vendor-prefixed/symfony/service-contracts/Tests
 rm -rf $plugin_name/vendor-prefixed/symfony/translation/Tests
 rm -rf $plugin_name/vendor-prefixed/symfony/translation-contracts/Tests
-rm -rf $plugin_name/vendor-prefixed/twig/twig/test
 
 # Remove risky files from 3rd party extensions
 echo '[BUILD] Removing risky and demo files from vendor libraries'
diff --git a/prefixer/fix-twig.php b/prefixer/fix-twig.php
index ed42bb640d..a9b0b5fdff 100755
--- a/prefixer/fix-twig.php
+++ b/prefixer/fix-twig.php
@@ -230,3 +230,6 @@ foreach ($replacements as $singleFile) {
 
 // Remove unwanted class aliases in lib/Twig
 exec("rm -rf ../vendor-prefixed/twig/twig/lib/Twig");
+exec("rm ../vendor-prefixed/twig/twig/drupal_test.sh");
+exec("rm ../vendor-prefixed/twig/twig/README.rst");
+exec("rm -rf ../vendor-prefixed/twig/twig/src/Test");