diff --git a/actix-files/src/named.rs b/actix-files/src/named.rs
index 519234f0d..87d53054f 100644
--- a/actix-files/src/named.rs
+++ b/actix-files/src/named.rs
@@ -120,6 +120,10 @@ impl NamedFile {
 
             let disposition = match ct.type_() {
                 mime::IMAGE | mime::TEXT | mime::VIDEO => DispositionType::Inline,
+                mime::APPLICATION => match ct.subtype() {
+                    mime::JAVASCRIPT => DispositionType::Inline,
+                    _ => DispositionType::Attachment,
+                },
                 _ => DispositionType::Attachment,
             };
 
@@ -214,8 +218,8 @@ impl NamedFile {
     /// Set the Content-Disposition for serving this file. This allows
     /// changing the inline/attachment disposition as well as the filename
     /// sent to the peer. By default the disposition is `inline` for text,
-    /// image, and video content types, and `attachment` otherwise, and
-    /// the filename is taken from the path provided in the `open` method
+    /// image, video and `application/javascript` content types, and `attachment` otherwise,
+    /// and the filename is taken from the path provided in the `open` method
     /// after converting it to UTF-8 using.
     /// [`std::ffi::OsStr::to_string_lossy`]
     #[inline]