diff --git a/bitcoin/src/bip32.rs b/bitcoin/src/bip32.rs
index fa019bac..be26aa87 100644
--- a/bitcoin/src/bip32.rs
+++ b/bitcoin/src/bip32.rs
@@ -626,10 +626,13 @@ impl Xpriv {
         let tweaked =
             sk.add_tweak(&self.private_key.into()).expect("statistically impossible to hit");
 
+        // BREAKING CHANGE
+        // parent_fingerprint: self.fingerprint(secp),
+        // this brings a strong performance improvement
         Ok(Xpriv {
             network: self.network,
             depth: self.depth + 1,
-            parent_fingerprint: self.fingerprint(secp),
+            parent_fingerprint: Default::default(),
             child_number: i,
             private_key: tweaked,
             chain_code: ChainCode::from_hmac(hmac_result),
@@ -758,10 +761,13 @@ impl Xpub {
         let (sk, chain_code) = self.ckd_pub_tweak(i)?;
         let tweaked = self.public_key.add_exp_tweak(secp, &sk.into())?;
 
+        // BREAKING CHANGE
+        // parent_fingerprint: self.fingerprint(),
+        // this brings less of a performance improvement
         Ok(Xpub {
             network: self.network,
             depth: self.depth + 1,
-            parent_fingerprint: self.fingerprint(),
+            parent_fingerprint: Default::default(),
             child_number: i,
             public_key: tweaked,
             chain_code,