diff --git a/gulpfile.js b/gulpfile.js
index 95a75a017..fcb4c9e17 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -22,6 +22,7 @@ var argv = require('yargs').argv,
     cssnano = require('gulp-cssnano'),
     gulpif = require('gulp-if'),
     gettext = require('gulp-angular-gettext'),
+    inject = require('gulp-inject-string'),
     jshint = require('gulp-jshint'),
     mainBowerFiles = require('main-bower-files'),
     path = require('path'),
@@ -61,6 +62,8 @@ gulp.task('js-libs', function () {
         .pipe(sourcemaps.init())
         .pipe(concat('openslides-libs.js'))
         .pipe(sourcemaps.write())
+        .pipe(inject.prepend("/* set basepath of CKEditor */\n" +
+                "window.CKEDITOR_BASEPATH = '/static/ckeditor/';\n\n"))
         .pipe(gulpif(argv.production, uglify()))
         .pipe(gulp.dest(path.join(output_directory, 'js')));
 });
diff --git a/openslides/core/static/templates/index.html b/openslides/core/static/templates/index.html
index b2318cec7..f416b51be 100644
--- a/openslides/core/static/templates/index.html
+++ b/openslides/core/static/templates/index.html
@@ -10,10 +10,7 @@
 <link rel="stylesheet" href="static/css/openslides-libs.css">
 <link rel="stylesheet" href="static/css/app.css">
 <link rel="icon" href="/static/img/favicon.png">
-<!-- TODO (#2787): move into openslides-libs-->
-<script>
-  window.CKEDITOR_BASEPATH = '/static/ckeditor/';
-</script>
+
 <script src="static/js/openslides-libs.js"></script>
 <script src="static/js/openslides.js"></script>
 <script src="static/js/openslides-templates.js"></script>
diff --git a/package.json b/package.json
index 0d9bae264..1bcc82d1e 100644
--- a/package.json
+++ b/package.json
@@ -14,6 +14,7 @@
     "gulp-concat": "~2.6.0",
     "gulp-cssnano": "~2.1.0",
     "gulp-if": "~2.0.0",
+    "gulp-inject-string": "~1.1.0",
     "gulp-jshint": "~2.0.0",
     "gulp-rename": "~1.2.2",
     "gulp-sourcemaps": "~1.6.0",