diff --git a/helix-core/src/increment/date_time.rs b/helix-core/src/increment/date_time.rs
index 80f2bf536..e3cfe107d 100644
--- a/helix-core/src/increment/date_time.rs
+++ b/helix-core/src/increment/date_time.rs
@@ -131,7 +131,7 @@ static FORMATS: Lazy<Vec<Format>> = Lazy::new(|| {
     ]
 });
 
-#[derive(Clone, Debug)]
+#[derive(Debug)]
 struct Format {
     fmt: &'static str,
     fields: Vec<DateField>,