diff --git a/src/util/psbt/map/output.rs b/src/util/psbt/map/output.rs
index 84dc3cd1..3842bb23 100644
--- a/src/util/psbt/map/output.rs
+++ b/src/util/psbt/map/output.rs
@@ -135,18 +135,18 @@ impl TapTree {
         self.0.branch()[0].as_ref().expect("from_inner only parses is_complete builders")
     }
 
-    /// Converts a [`TaprootBuilder`] into a tree if it is complete binary tree.
+    /// Constructs [`TapTree`] from a [`TaprootBuilder`] if it is complete binary tree.
     ///
     /// # Returns
-    /// A [`TapTree`] iff the `inner` builder is complete, otherwise return [`IncompleteTapTree`]
-    /// error with the content of incomplete builder `inner` instance.
-    pub fn from_inner(inner: TaprootBuilder) -> Result<Self, IncompleteTapTree> {
-        if !inner.is_finalized() {
-            Err(IncompleteTapTree::NotFinalized(inner))
-        } else if inner.has_hidden_nodes() {
-            Err(IncompleteTapTree::HiddenParts(inner))
+    /// A [`TapTree`] iff the `builder` is complete, otherwise return [`IncompleteTapTree`]
+    /// error with the content of incomplete `builder` instance.
+    pub fn from_builder(builder: TaprootBuilder) -> Result<Self, IncompleteTapTree> {
+        if !builder.is_finalized() {
+            Err(IncompleteTapTree::NotFinalized(builder))
+        } else if builder.has_hidden_nodes() {
+            Err(IncompleteTapTree::HiddenParts(builder))
         } else {
-            Ok(TapTree(inner))
+            Ok(TapTree(builder))
         }
     }
 
diff --git a/src/util/psbt/serialize.rs b/src/util/psbt/serialize.rs
index 3c946ec7..09fc8c7a 100644
--- a/src/util/psbt/serialize.rs
+++ b/src/util/psbt/serialize.rs
@@ -393,14 +393,14 @@ mod tests {
         let mut builder = compose_taproot_builder(0x51, &[2, 2, 2]);
         builder = builder.add_leaf_with_ver(3, Script::from_hex("b9").unwrap(), LeafVersion::from_consensus(0xC2).unwrap()).unwrap();
         builder = builder.add_hidden_node(3, sha256::Hash::default()).unwrap();
-        assert!(TapTree::from_inner(builder.clone()).is_err());
+        assert!(TapTree::from_builder(builder.clone()).is_err());
     }
 
     #[test]
     fn taptree_roundtrip() {
         let mut builder = compose_taproot_builder(0x51, &[2, 2, 2, 3]);
         builder = builder.add_leaf_with_ver(3, Script::from_hex("b9").unwrap(), LeafVersion::from_consensus(0xC2).unwrap()).unwrap();
-        let tree = TapTree::from_inner(builder).unwrap();
+        let tree = TapTree::from_builder(builder).unwrap();
         let tree_prime = TapTree::deserialize(&tree.serialize()).unwrap();
         assert_eq!(tree, tree_prime);
     }