diff --git a/crates/utils/src/interval_map/mod.rs b/crates/utils/src/interval_map/mod.rs
index 4ada9438f..97fead88e 100644
--- a/crates/utils/src/interval_map/mod.rs
+++ b/crates/utils/src/interval_map/mod.rs
@@ -707,11 +707,11 @@ where
 {
     /// Initializes the stack
     fn init_stack(&mut self) {
-        self.stack = Some(Self::left_tree(self.map_ref, self.map_ref.root));
+        self.stack = Some(Self::left_link(self.map_ref, self.map_ref.root));
     }
 
-    /// Pushes x and x's left sub tree to stack.
-    fn left_tree(map_ref: &IntervalMap<T, V, Ix>, mut x: NodeIndex<Ix>) -> Vec<NodeIndex<Ix>> {
+    /// Pushes a link of nodes on the left to stack.
+    fn left_link(map_ref: &IntervalMap<T, V, Ix>, mut x: NodeIndex<Ix>) -> Vec<NodeIndex<Ix>> {
         let mut nodes = vec![];
         while !map_ref.nref(x, Node::is_sentinel) {
             nodes.push(x);
@@ -738,7 +738,7 @@ where
             return None;
         }
         let x = stack.pop().unwrap();
-        stack.extend(Self::left_tree(
+        stack.extend(Self::left_link(
             self.map_ref,
             self.map_ref.nref(x, Node::right),
         ));