diff --git a/tools/make-thunderbird.sh b/tools/make-thunderbird.sh
index c99d80606..b73dd901c 100755
--- a/tools/make-thunderbird.sh
+++ b/tools/make-thunderbird.sh
@@ -12,11 +12,12 @@ mkdir -p $DES
 echo "*** uBlock0.thunderbird: copying common files"
 bash ./tools/copy-common-files.sh  $DES
 
-cp -R $DES/_locales/nb                  $DES/_locales/no
+cp -R $DES/_locales/nb                 $DES/_locales/no
 
-cp platform/thunderbird/manifest.json   $DES/
-cp platform/firefox/vapi-webrequest.js  $DES/js/
-cp platform/firefox/vapi-usercss.js     $DES/js/
+cp platform/thunderbird/manifest.json  $DES/
+cp platform/firefox/webext.js          $DES/js/
+cp platform/firefox/vapi-usercss.js    $DES/js/
+cp platform/firefox/vapi-webrequest.js $DES/js/
 
 echo "*** uBlock0.thunderbird: concatenating content scripts"
 cat $DES/js/vapi-usercss.js > /tmp/contentscript.js