diff --git a/forms/multipart-async-std/src/main.rs b/forms/multipart-async-std/src/main.rs
index c1ab9886..aefea22d 100644
--- a/forms/multipart-async-std/src/main.rs
+++ b/forms/multipart-async-std/src/main.rs
@@ -35,7 +35,9 @@ fn index() -> HttpResponse {
         </body>
     </html>"#;
 
-    HttpResponse::Ok().body(html)
+    HttpResponse::Ok()
+        .content_type("text/html; charset=utf-8")
+        .body(html)
 }
 
 #[actix_web::main]
diff --git a/forms/multipart-s3/src/main.rs b/forms/multipart-s3/src/main.rs
index 2a483eda..d6735012 100644
--- a/forms/multipart-s3/src/main.rs
+++ b/forms/multipart-s3/src/main.rs
@@ -69,7 +69,9 @@ fn index() -> HttpResponse {
         </script>
     </html>"#;
 
-    HttpResponse::Ok().body(html)
+    HttpResponse::Ok()
+        .content_type("text/html; charset=utf-8")
+        .body(html)
 }
 
 #[actix_web::main]
diff --git a/forms/multipart/src/main.rs b/forms/multipart/src/main.rs
index f0d75c3b..7e1a03bc 100644
--- a/forms/multipart/src/main.rs
+++ b/forms/multipart/src/main.rs
@@ -37,7 +37,9 @@ fn index() -> HttpResponse {
         </body>
     </html>"#;
 
-    HttpResponse::Ok().body(html)
+    HttpResponse::Ok()
+        .content_type("text/html; charset=utf-8")
+        .body(html)
 }
 
 #[actix_web::main]