diff --git a/Java/Ch 04. Trees and Graphs/Introduction/Traversals.java b/Java/Ch 04. Trees and Graphs/Introduction/Traversals.java
index 7c5940940..ea836d033 100644
--- a/Java/Ch 04. Trees and Graphs/Introduction/Traversals.java	
+++ b/Java/Ch 04. Trees and Graphs/Introduction/Traversals.java	
@@ -20,15 +20,15 @@ public static void inOrderTraversal(TreeNode node) {
 	public static void preOrderTraversal(TreeNode node) {
 		if (node != null) {
 			visit(node);
-			inOrderTraversal(node.left);
-			inOrderTraversal(node.right);
+			preOrderTraversal(node.left);
+			preOrderTraversal(node.right);
 		}
 	}
 	
 	public static void postOrderTraversal(TreeNode node) {
 		if (node != null) {
-			inOrderTraversal(node.left);
-			inOrderTraversal(node.right);
+			postOrderTraversal(node.left);
+			postOrderTraversal(node.right);
 			visit(node);
 		}
 	}