diff --git a/crates/revm/src/lib.rs b/crates/revm/src/lib.rs
index 3dfa14a197..d22a009460 100644
--- a/crates/revm/src/lib.rs
+++ b/crates/revm/src/lib.rs
@@ -30,7 +30,6 @@ pub mod optimism;
 
 pub use builder::EvmBuilder;
 pub use context::{Context, ContextWithHandlerCfg, EvmContext};
-#[cfg(feature = "std")]
 pub use db::{
     CacheState, DBBox, State, StateBuilder, StateDBBox, TransitionAccount, TransitionState,
 };
diff --git a/crates/revm/src/optimism/handler_register.rs b/crates/revm/src/optimism/handler_register.rs
index 4a5bce4c74..375d8f3e23 100644
--- a/crates/revm/src/optimism/handler_register.rs
+++ b/crates/revm/src/optimism/handler_register.rs
@@ -14,6 +14,7 @@ use crate::{
     Context, FrameResult,
 };
 use core::ops::Mul;
+use std::string::ToString;
 use std::sync::Arc;
 
 pub fn optimism_handle_register<DB: Database, EXT>(handler: &mut EvmHandler<'_, EXT, DB>) {