diff --git a/ethers-core/src/types/chain.rs b/ethers-core/src/types/chain.rs
index fd23c83b0..76bc50f3f 100644
--- a/ethers-core/src/types/chain.rs
+++ b/ethers-core/src/types/chain.rs
@@ -621,7 +621,7 @@ mod tests {
     fn serde_to_string_match() {
         for chain in Chain::iter() {
             let chain_serde = serde_json::to_string(&chain).unwrap();
-            let chain_string = format!("\"{}\"", chain.to_string());
+            let chain_string = format!("\"{}\"", chain);
             assert_eq!(chain_serde, chain_string);
         }
     }
diff --git a/ethers-etherscan/src/lib.rs b/ethers-etherscan/src/lib.rs
index 5577deb87..c1ea855e4 100644
--- a/ethers-etherscan/src/lib.rs
+++ b/ethers-etherscan/src/lib.rs
@@ -24,7 +24,7 @@ pub mod contract;
 pub mod errors;
 pub mod gas;
 pub mod source_tree;
-pub mod transaction;
+mod transaction;
 pub mod utils;
 pub mod verify;
 
diff --git a/ethers/src/lib.rs b/ethers/src/lib.rs
index 0911b6f02..0efb95b7f 100644
--- a/ethers/src/lib.rs
+++ b/ethers/src/lib.rs
@@ -106,8 +106,9 @@ pub use ethers_core::{abi, types, utils};
 
 /// Easy imports of frequently used type definitions and traits.
 #[doc(hidden)]
+#[allow(ambiguous_glob_reexports)]
 pub mod prelude {
-    pub use super::addressbook::*;
+    pub use super::addressbook::contract;
 
     pub use super::contract::*;