diff --git a/src/wallet/mod.rs b/src/wallet/mod.rs
index 8bb254c4..8f26d06f 100644
--- a/src/wallet/mod.rs
+++ b/src/wallet/mod.rs
@@ -1942,7 +1942,7 @@ mod test {
 
         assert_eq!(psbt.inputs[0].bip32_derivation.len(), 1);
         assert_eq!(
-            psbt.inputs[0].bip32_derivation.values().nth(0).unwrap(),
+            psbt.inputs[0].bip32_derivation.values().next().unwrap(),
             &(
                 Fingerprint::from_str("d34db33f").unwrap(),
                 DerivationPath::from_str("m/44'/0'/0'/0/0").unwrap()
@@ -1968,7 +1968,7 @@ mod test {
 
         assert_eq!(psbt.outputs[0].bip32_derivation.len(), 1);
         assert_eq!(
-            psbt.outputs[0].bip32_derivation.values().nth(0).unwrap(),
+            psbt.outputs[0].bip32_derivation.values().next().unwrap(),
             &(
                 Fingerprint::from_str("d34db33f").unwrap(),
                 DerivationPath::from_str("m/44'/0'/0'/0/5").unwrap()