diff --git a/CHANGES.md b/CHANGES.md
index f4fdd6af7..565362263 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -12,6 +12,11 @@
 * `.to_async()` handler can return `Responder` type #792
 
 
+### Fixed
+
+* Fix async web::Data factory handling
+
+
 ## [1.0.0-beta.1] - 2019-04-20
 
 ### Added
diff --git a/src/app.rs b/src/app.rs
index c0bbc8b2b..bb6d2aef8 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -431,13 +431,14 @@ where
 #[cfg(test)]
 mod tests {
     use actix_service::Service;
+    use bytes::Bytes;
     use futures::{Future, IntoFuture};
 
     use super::*;
     use crate::http::{header, HeaderValue, Method, StatusCode};
     use crate::service::{ServiceRequest, ServiceResponse};
-    use crate::test::{block_on, call_service, init_service, TestRequest};
-    use crate::{web, Error, HttpResponse};
+    use crate::test::{block_on, call_service, init_service, read_body, TestRequest};
+    use crate::{web, Error, HttpRequest, HttpResponse};
 
     #[test]
     fn test_default_resource() {
@@ -598,4 +599,26 @@ mod tests {
             HeaderValue::from_static("0001")
         );
     }
+
+    #[test]
+    fn test_external_resource() {
+        let mut srv = init_service(
+            App::new()
+                .external_resource("youtube", "https://youtube.com/watch/{video_id}")
+                .route(
+                    "/test",
+                    web::get().to(|req: HttpRequest| {
+                        HttpResponse::Ok().body(format!(
+                            "{}",
+                            req.url_for("youtube", &["12345"]).unwrap()
+                        ))
+                    }),
+                ),
+        );
+        let req = TestRequest::with_uri("/test").to_request();
+        let resp = call_service(&mut srv, req);
+        assert_eq!(resp.status(), StatusCode::OK);
+        let body = read_body(resp);
+        assert_eq!(body, Bytes::from_static(b"https://youtube.com/watch/12345"));
+    }
 }
diff --git a/src/app_service.rs b/src/app_service.rs
index 63bf84e76..7229a2301 100644
--- a/src/app_service.rs
+++ b/src/app_service.rs
@@ -162,7 +162,7 @@ where
             }
         }
 
-        if self.endpoint.is_some() {
+        if self.endpoint.is_some() && self.data.is_empty() {
             Ok(Async::Ready(AppInitService {
                 service: self.endpoint.take().unwrap(),
                 rmap: self.rmap.clone(),
diff --git a/src/config.rs b/src/config.rs
index a8caba4d2..4c4bfa220 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -253,11 +253,14 @@ impl ServiceConfig {
 #[cfg(test)]
 mod tests {
     use actix_service::Service;
+    use bytes::Bytes;
+    use futures::Future;
+    use tokio_timer::sleep;
 
     use super::*;
     use crate::http::{Method, StatusCode};
-    use crate::test::{block_on, call_service, init_service, TestRequest};
-    use crate::{web, App, HttpResponse};
+    use crate::test::{block_on, call_service, init_service, read_body, TestRequest};
+    use crate::{web, App, HttpRequest, HttpResponse};
 
     #[test]
     fn test_data() {
@@ -277,7 +280,12 @@ mod tests {
     #[test]
     fn test_data_factory() {
         let cfg = |cfg: &mut ServiceConfig| {
-            cfg.data_factory(|| Ok::<_, ()>(10usize));
+            cfg.data_factory(|| {
+                sleep(std::time::Duration::from_millis(50)).then(|_| {
+                    println!("READY");
+                    Ok::<_, ()>(10usize)
+                })
+            });
         };
 
         let mut srv =
@@ -301,6 +309,33 @@ mod tests {
         assert_eq!(resp.status(), StatusCode::INTERNAL_SERVER_ERROR);
     }
 
+    #[test]
+    fn test_external_resource() {
+        let mut srv = init_service(
+            App::new()
+                .configure(|cfg| {
+                    cfg.external_resource(
+                        "youtube",
+                        "https://youtube.com/watch/{video_id}",
+                    );
+                })
+                .route(
+                    "/test",
+                    web::get().to(|req: HttpRequest| {
+                        HttpResponse::Ok().body(format!(
+                            "{}",
+                            req.url_for("youtube", &["12345"]).unwrap()
+                        ))
+                    }),
+                ),
+        );
+        let req = TestRequest::with_uri("/test").to_request();
+        let resp = call_service(&mut srv, req);
+        assert_eq!(resp.status(), StatusCode::OK);
+        let body = read_body(resp);
+        assert_eq!(body, Bytes::from_static(b"https://youtube.com/watch/12345"));
+    }
+
     #[test]
     fn test_service() {
         let mut srv = init_service(App::new().configure(|cfg| {