diff --git a/src/body/stream_body.rs b/src/body/stream_body.rs
index 17ddbd33..d60af154 100644
--- a/src/body/stream_body.rs
+++ b/src/body/stream_body.rs
@@ -17,7 +17,7 @@ use sync_wrapper::SyncWrapper;
 pin_project! {
     /// An [`http_body::Body`] created from a [`Stream`].
     ///
-    /// If purpose of this type is to be used in responses. If you want to
+    /// The purpose of this type is to be used in responses. If you want to
     /// extract the request body as a stream consider using
     /// [`BodyStream`](crate::extract::BodyStream).
     ///