diff --git a/frame/support/src/storage/bounded_vec.rs b/frame/support/src/storage/bounded_vec.rs
index fbbb9d4d26653..88ab744129a58 100644
--- a/frame/support/src/storage/bounded_vec.rs
+++ b/frame/support/src/storage/bounded_vec.rs
@@ -998,7 +998,7 @@ pub mod test {
 			serde_json::from_str(r#"[0,1,2,3,4,5]"#);
 
 		match c {
-			Err(msg) => assert_eq!(format!("{}", msg), "out of bounds at line 1 column 11"),
+			Err(msg) => assert_eq!(msg.to_string(), "out of bounds at line 1 column 11"),
 			_ => unreachable!("deserializer must raise error"),
 		}
 	}