diff --git a/doc/effective_go.html b/doc/effective_go.html
index 62851871c5f..e546c083b6d 100644
--- a/doc/effective_go.html
+++ b/doc/effective_go.html
@@ -2947,7 +2947,7 @@ func Serve(queue chan *Request) {
         go func() {
             process(req)
             sem <- 1
-        }
+        }()
     }
 }</pre>