Refactor Drop implementation in README example

1 files changed, 2 insertions, 2 deletions

diff --git a/README.md b/README.md
index 466ee55..b968964 100644
--- a/README.md
+++ b/README.md
@@ -567,8 +567,8 @@ fn main() {
 Implement `Drop` to run cleanup logic automatically.
 ```zc
 impl Drop for MyStruct {
-    fn drop(mut self) {
-        free(self.data);
+    fn drop(self) {
+        self.free();
     }
 }
 ```