2 files changed, 4 insertions, 2 deletions
diff --git a/serde_v8/tests/de.rs b/serde_v8/tests/de.rs
index 076230819..2df93ae7a 100644
--- a/serde_v8/tests/de.rs
+++ b/serde_v8/tests/de.rs
@@ -33,7 +33,7 @@ macro_rules! detest {
     fn $fn_name() {
       dedo($src, |scope, v| {
         let rt = serde_v8::from_v8(scope, v);
-        assert!(rt.is_ok(), format!("from_v8(\"{}\"): {:?}", $src, rt.err()));
+        assert!(rt.is_ok(), "from_v8(\"{}\"): {:?}", $src, rt.err());
         let t: $t = rt.unwrap();
         assert_eq!(t, $rust);
       });
diff --git a/serde_v8/tests/ser.rs b/serde_v8/tests/ser.rs
index e110b693c..2ae606526 100644
--- a/serde_v8/tests/ser.rs
+++ b/serde_v8/tests/ser.rs
@@ -59,7 +59,9 @@ macro_rules! sertest {
     fn $fn_name() {
       assert!(
         sercheck($rust, $src),
-        format!("Expected: {} where x={:?}", $src, $rust),
+        "Expected: {} where x={:?}",
+        $src,
+        $rust,
       );
     }
   };