diff --git a/v2/pkg/assetserver/assethandler.go b/v2/pkg/assetserver/assethandler.go
index d96681eab..c85bf81e6 100644
--- a/v2/pkg/assetserver/assethandler.go
+++ b/v2/pkg/assetserver/assethandler.go
@@ -154,16 +154,19 @@ func (d *assetHandler) serveFSFile(rw http.ResponseWriter, req *http.Request, fi
 	}
 
 	var buf [512]byte
-	n, err := file.Read(buf[:])
-	if err != nil && err != io.EOF {
-		return err
-	}
+	var n int
+	if _, haveType := rw.Header()[HeaderContentType]; !haveType {
+		// Detect MimeType by sniffing the first 512 bytes
+		n, err = file.Read(buf[:])
+		if err != nil && err != io.EOF {
+			return err
+		}
 
-	// Detect MimeType by sniffing the first 512 bytes
-	// Do the custom MimeType sniffing even though http.ServeContent would do it in case
-	// of an io.ReadSeeker. We would like to have a consistent behaviour in both cases.
-	if contentType := GetMimetype(filename, buf[:n]); contentType != "" {
-		rw.Header().Set(HeaderContentType, contentType)
+		// Do the custom MimeType sniffing even though http.ServeContent would do it in case
+		// of an io.ReadSeeker. We would like to have a consistent behaviour in both cases.
+		if contentType := GetMimetype(filename, buf[:n]); contentType != "" {
+			rw.Header().Set(HeaderContentType, contentType)
+		}
 	}
 
 	if fileSeeker, _ := file.(io.ReadSeeker); fileSeeker != nil {
diff --git a/website/src/pages/changelog.mdx b/website/src/pages/changelog.mdx
index fa28013b3..4e75d066f 100644
--- a/website/src/pages/changelog.mdx
+++ b/website/src/pages/changelog.mdx
@@ -17,6 +17,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 - Added Webview GPU acceleration options for [Windows](/docs/reference/options#webviewgpuisdisabled) and [Linux](/docs/reference/options#webviewgpupolicy). Added by @Lyimmi in [PR](https://github.com/wailsapp/wails/pull/2266)
 - Added `EnableFraudulentWebsiteDetection` option to opt-in to scan services for fraudulent content, such as malware or phishing attempts. Older releases had the scan services per default activated. Added by @stffabi in [PR](https://github.com/wailsapp/wails/pull/2269)
+- Allow an [AssetServer Middleware](/docs/reference/options#middleware) to specify the `Content-Type` of a file served by the [Assets](/docs/reference/options#assets-1) `fs.FS`. Added by @stffabi in [PR](https://github.com/wailsapp/wails/pull/2286)
 
 ### Changed
 - Improved fullscreen mode for frameless window on Windows. Changed by @stffabi in [PR](https://github.com/wailsapp/wails/pull/2279), [PR](https://github.com/wailsapp/wails/pull/2288) and [PR](https://github.com/wailsapp/wails/pull/2299)