diff --git a/bitcoin/src/address/mod.rs b/bitcoin/src/address/mod.rs
index 38c171b37..7aa72868e 100644
--- a/bitcoin/src/address/mod.rs
+++ b/bitcoin/src/address/mod.rs
@@ -288,14 +288,14 @@ pub enum AddressData {
 ///
 /// // variant 1
 /// let address: Address<NetworkUnchecked> = "32iVBEu4dxkUQk9dJbZUiBiQdmypcEyJRf".parse().unwrap();
-/// let address: Address<NetworkChecked> = address.require_network(Network::Bitcoin).unwrap();
+/// let _address: Address<NetworkChecked> = address.require_network(Network::Bitcoin).unwrap();
 ///
 /// // variant 2
-/// let address: Address = Address::from_str("32iVBEu4dxkUQk9dJbZUiBiQdmypcEyJRf").unwrap()
+/// let _address: Address = Address::from_str("32iVBEu4dxkUQk9dJbZUiBiQdmypcEyJRf").unwrap()
 ///                .require_network(Network::Bitcoin).unwrap();
 ///
 /// // variant 3
-/// let address: Address<NetworkChecked> = "32iVBEu4dxkUQk9dJbZUiBiQdmypcEyJRf".parse::<Address<_>>()
+/// let _address: Address<NetworkChecked> = "32iVBEu4dxkUQk9dJbZUiBiQdmypcEyJRf".parse::<Address<_>>()
 ///                .unwrap().require_network(Network::Bitcoin).unwrap();
 /// ```
 ///
diff --git a/bitcoin/src/network/params.rs b/bitcoin/src/network/params.rs
index 9d9cc5f56..ca93169c6 100644
--- a/bitcoin/src/network/params.rs
+++ b/bitcoin/src/network/params.rs
@@ -61,6 +61,8 @@
 //! #    let _ = target.difficulty(signet);
 //! #
 //! #    let custom = CustomParams::new();
+//! #    let _ = custom.magic();
+//! #    let _ = custom.challenge_script();
 //! #    let _ = target.difficulty(custom);
 //! # }
 //! ```
diff --git a/bitcoin/src/psbt/map/input.rs b/bitcoin/src/psbt/map/input.rs
index e9502daf1..803780d23 100644
--- a/bitcoin/src/psbt/map/input.rs
+++ b/bitcoin/src/psbt/map/input.rs
@@ -144,8 +144,8 @@ pub struct Input {
 /// use bitcoin::{EcdsaSighashType, TapSighashType};
 /// use bitcoin::psbt::PsbtSighashType;
 ///
-/// let ecdsa_sighash_all: PsbtSighashType = EcdsaSighashType::All.into();
-/// let tap_sighash_all: PsbtSighashType = TapSighashType::All.into();
+/// let _ecdsa_sighash_all: PsbtSighashType = EcdsaSighashType::All.into();
+/// let _tap_sighash_all: PsbtSighashType = TapSighashType::All.into();
 /// ```
 #[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
@@ -208,8 +208,8 @@ impl PsbtSighashType {
     /// ```
     /// use bitcoin::{EcdsaSighashType, TapSighashType};
     /// use bitcoin::psbt::PsbtSighashType;
-    /// let ecdsa_sighash_anyone_can_pay: PsbtSighashType = EcdsaSighashType::AllPlusAnyoneCanPay.into();
-    /// let tap_sighash_anyone_can_pay: PsbtSighashType = TapSighashType::AllPlusAnyoneCanPay.into();
+    /// let _ecdsa_sighash_anyone_can_pay: PsbtSighashType = EcdsaSighashType::AllPlusAnyoneCanPay.into();
+    /// let _tap_sighash_anyone_can_pay: PsbtSighashType = TapSighashType::AllPlusAnyoneCanPay.into();
     /// ```
     pub const ALL: PsbtSighashType = PsbtSighashType { inner: 0x01 };