diff --git a/chapter15/15.02.md b/chapter15/15.02.md
index 67ceb88..b48b654 100644
--- a/chapter15/15.02.md
+++ b/chapter15/15.02.md
@@ -22,7 +22,7 @@
     func main() {
         i := 100
         fmt.Println(i)  // 100
-        p := (*int)unsafe.Pointer(&i)
+        p := (*int)(unsafe.Pointer(&i))
         fmt.Println(*p) // 100
         *p = 0
         fmt.Println(i)  // 0