diff --git a/data-structures/src/main/java/com/baeldung/trie/Trie.java b/data-structures/src/main/java/com/baeldung/trie/Trie.java
index dac1a64733..9f0be5c647 100644
--- a/data-structures/src/main/java/com/baeldung/trie/Trie.java
+++ b/data-structures/src/main/java/com/baeldung/trie/Trie.java
@@ -10,8 +10,8 @@ class Trie {
     void insert(String word) {
         TrieNode current = root;
 
-        for (int i = 0; i < word.length(); i++) {
-            current = current.getChildren().computeIfAbsent(word.charAt(i), c -> new TrieNode());
+        for (char l : word.toCharArray()) {
+            current = current.getChildren().computeIfAbsent(l, c -> new TrieNode());
         }
         current.setEndOfWord(true);
     }
@@ -59,4 +59,4 @@ class Trie {
         }
         return false;
     }
-}
\ No newline at end of file
+}