diff --git a/src/extractor.rs b/src/extractor.rs
index 1f196c92c..312287e0f 100644
--- a/src/extractor.rs
+++ b/src/extractor.rs
@@ -693,7 +693,7 @@ macro_rules! tuple_from_req ({$fut_type:ident, $(($n:tt, $T:ident)),+} => {
 impl<S> FromRequest<S> for () {
     type Config = ();
     type Result = Self;
-    fn from_request(_req: &HttpRequest<S>, _cfg: &Self::Config) {}
+    fn from_request(_req: &HttpRequest<S>, _cfg: &Self::Config) -> Self::Result {}
 }
 
 tuple_from_req!(TupleFromRequest1, (0, A));
@@ -1013,6 +1013,6 @@ mod tests {
         assert_eq!((res.1).0, "name");
         assert_eq!((res.1).1, "user1");
 
-        <()>::extract(&req);
+        let () = <()>::extract(&req);
     }
 }