diff --git a/lnwallet/btcwallet/signer.go b/lnwallet/btcwallet/signer.go
index 69f7ab60912..b3a6de8782c 100644
--- a/lnwallet/btcwallet/signer.go
+++ b/lnwallet/btcwallet/signer.go
@@ -238,13 +238,32 @@ func (b *BtcWallet) fetchPrivKey(
 
 // maybeTweakPrivKey examines the single and double tweak parameters on the
 // passed sign descriptor and may perform a mapping on the passed private key
-// in order to utilize the tweaks, if populated.
+// in order to utilize the tweaks, if populated. If both tweak parameters are
+// set, then both are applied in the following order:
+//
+//	a) double tweak
+//	b) single tweak
 func maybeTweakPrivKey(signDesc *input.SignDescriptor,
 	privKey *btcec.PrivateKey) (*btcec.PrivateKey, error) {
 
 	var retPriv *btcec.PrivateKey
-	switch {
 
+	// If both tweak parameters are set, then apply both.
+	if signDesc.DoubleTweak != nil && signDesc.SingleTweak != nil {
+		// First apply the double tweak.
+		retPriv = input.DeriveRevocationPrivKey(privKey,
+			signDesc.DoubleTweak)
+
+		// Then apply the single tweak.
+		retPriv = input.TweakPrivKey(retPriv,
+			signDesc.SingleTweak)
+
+		return retPriv, nil
+	}
+
+	// If only one tweak parameter is set, apply it respectively over the
+	// provided private key.
+	switch {
 	case signDesc.SingleTweak != nil:
 		retPriv = input.TweakPrivKey(privKey,
 			signDesc.SingleTweak)