diff --git a/Gruntfile.js b/Gruntfile.js
index 4c7feb23..d2d6c2dc 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -126,8 +126,8 @@ module.exports = function(grunt) {
         overwrite: true,
         replacements: [
           {
-            from: "external_indutny_elliptic: false",
-            to: "external_indutny_elliptic: true"
+            from: "externalIndutnyElliptic: false",
+            to: "externalIndutnyElliptic: true"
           }
         ]
       },
diff --git a/travis.sh b/travis.sh
index 9e4017f8..1da1ef95 100755
--- a/travis.sh
+++ b/travis.sh
@@ -14,7 +14,7 @@ elif [ $OPENPGPJSTEST = "unit" ]; then
 elif [ $OPENPGPJSTEST = "browserstack" ]; then
   echo "Running OpenPGP.js browser unit tests on Browserstack."
 
-  grunt build browserify:unittests copy:browsertest --compat=$COMPAT
+  grunt build browserify:unittests copy:browsertest --compat=$COMPAT --lightweight=$LIGHTWEIGHT
   echo -n "Using config: "
   echo "{\"browsers\": [$BROWSER], \"test_framework\": \"mocha\", \"test_path\": [\"test/unittests.html?ci=true\"], \"timeout\": 1800, \"exit_with_fail\": true, \"project\": \"openpgpjs/${TRAVIS_EVENT_TYPE:-push}${COMPAT:+/compat}${LIGHTWEIGHT:+/lightweight}\"}" > browserstack.json
   cat browserstack.json