diff --git a/crates/cast/src/lib.rs b/crates/cast/src/lib.rs
index ef5f343894b09..16e9d55f28a8e 100644
--- a/crates/cast/src/lib.rs
+++ b/crates/cast/src/lib.rs
@@ -749,7 +749,7 @@ impl<P: Provider<AnyNetwork>> Cast<P> {
     pub async fn codesize(&self, who: Address, block: Option<BlockId>) -> Result<String> {
         let code =
             self.provider.get_code_at(who).block_id(block.unwrap_or_default()).await?.to_vec();
-        Ok(format!("{}", code.len()))
+        Ok(code.len().to_string())
     }
 
     /// # Example