diff --git a/basic_content/const/README.md b/basic_content/const/README.md
index c23e458..e9a23d8 100644
--- a/basic_content/const/README.md
+++ b/basic_content/const/README.md
@@ -45,7 +45,7 @@ void f(const int i){
 
 ```cpp
 // file1.cpp
-int ext
+int ext;
 // file2.cpp
 #include<iostream>