diff --git a/crates/committer/src/patricia_merkle_tree/filled_tree/tree.rs b/crates/committer/src/patricia_merkle_tree/filled_tree/tree.rs
index 18eff8c0..c59223a1 100644
--- a/crates/committer/src/patricia_merkle_tree/filled_tree/tree.rs
+++ b/crates/committer/src/patricia_merkle_tree/filled_tree/tree.rs
@@ -175,7 +175,7 @@ impl<L: LeafData> FilledTreeImpl<L> {
                     .get(&index)
                     .ok_or(FilledTreeError::<L>::MissingDataForUpdate(index))?
                     .clone();
-                if skeleton_leaf.is_empty() != leaf_data.is_empty() {
+                if skeleton_leaf.is_zero() != leaf_data.is_empty() {
                     return Err(FilledTreeError::<L>::InconsistentModification {
                         index,
                         skeleton_leaf: skeleton_leaf.clone(),
diff --git a/crates/committer/src/patricia_merkle_tree/node_data/leaf.rs b/crates/committer/src/patricia_merkle_tree/node_data/leaf.rs
index d47e11a8..5f21cc14 100644
--- a/crates/committer/src/patricia_merkle_tree/node_data/leaf.rs
+++ b/crates/committer/src/patricia_merkle_tree/node_data/leaf.rs
@@ -47,8 +47,8 @@ pub enum SkeletonLeaf {
     NonZero,
 }
 
-impl LeafData for SkeletonLeaf {
-    fn is_empty(&self) -> bool {
+impl SkeletonLeaf {
+    pub(crate) fn is_zero(&self) -> bool {
         self == &Self::Zero
     }
 }