diff --git a/src/splay.rs b/src/splay.rs
index 216c229..ef32afd 100644
--- a/src/splay.rs
+++ b/src/splay.rs
@@ -152,10 +152,6 @@ impl<P: Path> Forest<P> {
     //          / \          / \
     //         3   4        1   3
     fn rotate_left(&mut self, node_idx: usize) {
-        assert!(
-            node_idx < self.nodes.len(),
-            "rotate_left: node_idx out of bounds"
-        );
         assert!(
             self.nodes[node_idx].right.is_some(),
             "rotate_left: node_idx does not have a right child"
@@ -188,10 +184,6 @@ impl<P: Path> Forest<P> {
     //      / \                  / \
     //     2   3                3   4
     fn rotate_right(&mut self, node_idx: usize) {
-        assert!(
-            node_idx < self.nodes.len(),
-            "rotate_right: node_idx out of bounds"
-        );
         assert!(
             self.nodes[node_idx].left.is_some(),
             "rotate_right: node_idx does not have a left child"
@@ -218,10 +210,6 @@ impl<P: Path> Forest<P> {
 
     // Rotates the parent of `node_idx` to the right or left, depending on the relationship between.
     fn rotate(&mut self, node_idx: usize) {
-        assert!(
-            node_idx < self.nodes.len(),
-            "rotate: node_idx out of bounds"
-        );
         assert!(
             matches!(self.nodes[node_idx].parent, Parent::Node(_)),
             "rotate: node_idx does not have a parent"