diff --git a/gulpfile.js b/gulpfile.js
index e56ce77..e88ced5 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -18,12 +18,12 @@ gulp.task('less', function () {
 });
 
 gulp.task('uglify', function () {
-    return gulp.src('./static/dark_theme/dark_theme.js')
+    return gulp.src('./static/dark-theme/dark-theme.js')
         .pipe(uglify())
         .pipe(rename({
             extname: '.min.js'
         }))
-        .pipe(gulp.dest('./static/dark_theme'));
+        .pipe(gulp.dest('./static/dark-theme'));
 });
 
 gulp.task('cp', function () {
diff --git a/static/dark_theme/dark_theme.js b/static/dark-theme/dark-theme.js
similarity index 100%
rename from static/dark_theme/dark_theme.js
rename to static/dark-theme/dark-theme.js
diff --git a/static/dark_theme/dark_theme.min.js b/static/dark-theme/dark-theme.min.js
similarity index 100%
rename from static/dark_theme/dark_theme.min.js
rename to static/dark-theme/dark-theme.min.js
diff --git a/templates/partial/flex.html b/templates/partial/flex.html
index 02d1465..a920fd6 100644
--- a/templates/partial/flex.html
+++ b/templates/partial/flex.html
@@ -13,7 +13,7 @@
       browser_url='<a href="javascript:void(0)" onclick="theme.switch(`browser`)">browser</a>'|safe)
   }}
   <script id="dark-theme-script"
-          src="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/dark_theme/dark_theme.min.js"
+          src="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/dark-theme/dark-theme.min.js"
           data-enable-auto-detect-theme="{{ THEME_COLOR_AUTO_DETECT_BROWSER_PREFERENCE|default('false') }}"
           data-default-theme="{{ THEME_COLOR|default('light') }}"
           type="text/javascript">