diff --git a/ch2-cgo/ch2-03-cgo-types.md b/ch2-cgo/ch2-03-cgo-types.md
index fb5ccec..1e277f4 100644
--- a/ch2-cgo/ch2-03-cgo-types.md
+++ b/ch2-cgo/ch2-03-cgo-types.md
@@ -336,7 +336,7 @@ func main() {
 	arr1 := (*[31]byte)(unsafe.Pointer(&C.arr[0]))[:10:10]
 
 	var s0 string
-	var s0Hdr := (*reflect.StringHeader)(unsafe.Pointer(&s0))
+	var s0Hdr = (*reflect.StringHeader)(unsafe.Pointer(&s0))
 	s0Hdr.Data = uintptr(unsafe.Pointer(C.s))
 	s0Hdr.Len = int(C.strlen(C.s))