diff --git a/ethers-etherscan/src/lib.rs b/ethers-etherscan/src/lib.rs
index 68b8fa93..2eaa1702 100644
--- a/ethers-etherscan/src/lib.rs
+++ b/ethers-etherscan/src/lib.rs
@@ -97,17 +97,17 @@ impl Client {
         let api_key = match chain {
             Chain::Avalanche | Chain::AvalancheFuji => std::env::var("SNOWTRACE_API_KEY")?,
             Chain::Polygon | Chain::PolygonMumbai => std::env::var("POLYGONSCAN_API_KEY")?,
-            Chain::Mainnet
-            | Chain::Ropsten
-            | Chain::Kovan
-            | Chain::Rinkeby
-            | Chain::Goerli
-            | Chain::Optimism
-            | Chain::OptimismKovan
-            | Chain::Fantom
-            | Chain::FantomTestnet
-            | Chain::BinanceSmartChain
-            | Chain::BinanceSmartChainTestnet => std::env::var("ETHERSCAN_API_KEY")?,
+            Chain::Mainnet |
+            Chain::Ropsten |
+            Chain::Kovan |
+            Chain::Rinkeby |
+            Chain::Goerli |
+            Chain::Optimism |
+            Chain::OptimismKovan |
+            Chain::Fantom |
+            Chain::FantomTestnet |
+            Chain::BinanceSmartChain |
+            Chain::BinanceSmartChainTestnet => std::env::var("ETHERSCAN_API_KEY")?,
 
             Chain::XDai | Chain::Sepolia => String::default(),
             Chain::Moonbeam | Chain::MoonbeamDev | Chain::Moonriver => {