diff --git a/src/main.rs b/src/main.rs
index 579e6e72ff..6c9b2a586d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -757,7 +757,7 @@ mod tests {
             s.as_bytes(),
             &DisplayOptions::default(),
             &DiffOptions::default(),
-            &[]
+            &[],
         );
 
         assert_eq!(res.lhs_positions, vec![]);