diff --git a/crates/trie/common/src/prefix_set.rs b/crates/trie/common/src/prefix_set.rs
index 6714893f16d..35c4bc67839 100644
--- a/crates/trie/common/src/prefix_set.rs
+++ b/crates/trie/common/src/prefix_set.rs
@@ -280,8 +280,8 @@ mod tests {
         prefix_set_mut.insert(Nibbles::from_nibbles([4, 5, 6]));
         prefix_set_mut.insert(Nibbles::from_nibbles([1, 2, 3])); // Duplicate
 
-        assert_eq!(prefix_set_mut.keys.len(), 4); // Length should be 3 (including duplicate)
-        assert_eq!(prefix_set_mut.keys.capacity(), 4); // Capacity should be 4 (including duplicate)
+        assert_eq!(prefix_set_mut.keys.len(), 4); // Length is 4 (before deduplication)
+        assert_eq!(prefix_set_mut.keys.capacity(), 4); // Capacity is 4 (before deduplication)
 
         let mut prefix_set = prefix_set_mut.freeze();
         assert!(prefix_set.contains(&Nibbles::from_nibbles_unchecked([1, 2])));
@@ -300,8 +300,8 @@ mod tests {
         prefix_set_mut.insert(Nibbles::from_nibbles([4, 5, 6]));
         prefix_set_mut.insert(Nibbles::from_nibbles([1, 2, 3])); // Duplicate
 
-        assert_eq!(prefix_set_mut.keys.len(), 4); // Length should be 3 (including duplicate)
-        assert_eq!(prefix_set_mut.keys.capacity(), 101); // Capacity should be 101 (including duplicate)
+        assert_eq!(prefix_set_mut.keys.len(), 4); // Length is 4 (before deduplication)
+        assert_eq!(prefix_set_mut.keys.capacity(), 101); // Capacity is 101 (before deduplication)
 
         let mut prefix_set = prefix_set_mut.freeze();
         assert!(prefix_set.contains(&Nibbles::from_nibbles_unchecked([1, 2])));