diff --git a/signer/src/eth.rs b/signer/src/eth.rs
index 0ad6d3b8ee..7e6e8d3a08 100644
--- a/signer/src/eth.rs
+++ b/signer/src/eth.rs
@@ -59,7 +59,7 @@ impl Keypair {
             mnemonic.to_seed(password.unwrap_or("")),
             &derivation_path,
         )
-        .unwrap();
+        .expect("valid private key");
 
         Keypair::from_seed(private.to_bytes())
     }
@@ -315,6 +315,7 @@ mod test {
 
         #[test]
         fn check_account_id(keypair in keypair()) {
+            // https://github.com/ethereumbook/ethereumbook/blob/develop/04keys-addresses.asciidoc#ethereum-addresses
             let account_id = {
                 let uncompressed = keypair.0.0.public_key().serialize_uncompressed();
                 let hash = keccak(&uncompressed[1..]).0;
diff --git a/signer/wasm-tests/tests/wasm.rs b/signer/wasm-tests/tests/wasm.rs
index 53f08ab292..667f20a55c 100644
--- a/signer/wasm-tests/tests/wasm.rs
+++ b/signer/wasm-tests/tests/wasm.rs
@@ -45,7 +45,7 @@ async fn wasm_ecdsa_signing_works() {
 
 #[wasm_bindgen_test]
 async fn wasm_eth_signing_works() {
-    let alice = eth::dev::alice();
+    let alice = eth::dev::alith();
 
     // There's some non-determinism in the signing, so this ensures that
     // the rand stuff is configured properly to run ok in wasm.