diff --git a/src/async-rust/tokio/stream.md b/src/async-rust/tokio/stream.md
index 58b1773a..c7b07753 100644
--- a/src/async-rust/tokio/stream.md
+++ b/src/async-rust/tokio/stream.md
@@ -184,7 +184,7 @@ got = b"6"
 let messages = subscriber
     .into_stream()
     .filter_map(|msg| match msg {
-        Ok(msg) if msg.content.len() == 1 => msg.unwrap().content,
+        Ok(msg) if msg.content.len() == 1 => Some(msg.content),
         _ => None,
     })
     .take(3);
diff --git a/src/basic/match-pattern/pattern-match.md b/src/basic/match-pattern/pattern-match.md
index 5b8837e5..3e823445 100644
--- a/src/basic/match-pattern/pattern-match.md
+++ b/src/basic/match-pattern/pattern-match.md
@@ -145,7 +145,7 @@ fn main() {
 
 `&(3, 5)` 会匹配模式 `&(x, y)`，因此 `x` 得到了 `3`，`y` 得到了 `5`。
 
-#### if 和 if let
+#### let 和 if let
 
 对于以下代码，编译器会报错：