diff --git a/animations/stack/stack.js b/animations/stack/stack.js
index eafc6df..5400360 100644
--- a/animations/stack/stack.js
+++ b/animations/stack/stack.js
@@ -595,11 +595,11 @@ function case4() {
     resetAnimation("([])");
 }
 
-// Case 4: "({[{[()]}]})"
+// Case 5: "({[{[()]}]})"
 function case5() {
     resetAnimation("{[([])]}");
 }
 
 // Initialize the animation
 init();
-case1(); // Start with Case 1 by default
\ No newline at end of file
+case1(); // Start with Case 1 by default