diff --git a/src/basic/trait/trait.md b/src/basic/trait/trait.md
index 6a43a4e1..b536f2d2 100644
--- a/src/basic/trait/trait.md
+++ b/src/basic/trait/trait.md
@@ -526,7 +526,7 @@ fn main() {
 use std::fmt;
 use std::fmt::{Display};
 
-#[derive(Debug,PartialEq)]
+#[derive(Debug)]
 enum FileState {
   Open,
   Closed,