diff --git a/actix-http/src/error.rs b/actix-http/src/error.rs
index d3095e68d..d9b97d6a6 100644
--- a/actix-http/src/error.rs
+++ b/actix-http/src/error.rs
@@ -54,7 +54,7 @@ impl Error {
 
     /// Similar to `as_response_error` but downcasts.
     pub fn as_error<T: ResponseError + 'static>(&self) -> Option<&T> {
-        ResponseError::downcast_ref(self.cause.as_ref())
+        <dyn ResponseError>::downcast_ref(self.cause.as_ref())
     }
 }