diff --git a/proto/src/serializers/from_str.rs b/proto/src/serializers/from_str.rs
index c17625246..1880c2284 100644
--- a/proto/src/serializers/from_str.rs
+++ b/proto/src/serializers/from_str.rs
@@ -23,5 +23,5 @@ where
     S: Serializer,
     T: core::fmt::Display,
 {
-    format!("{value}").serialize(serializer)
+    value.to_string().serialize(serializer)
 }
diff --git a/rpc/src/response.rs b/rpc/src/response.rs
index 09d234615..df6f85b0d 100644
--- a/rpc/src/response.rs
+++ b/rpc/src/response.rs
@@ -69,7 +69,6 @@ impl<R> Wrapper<R> {
         }
     }
 
-    #[cfg(test)]
     pub fn new_with_id(id: Id, result: Option<R>, error: Option<ResponseError>) -> Self {
         Self {
             jsonrpc: Version::current(),