diff --git a/README.md b/README.md
index efdfe03..677b002 100644
--- a/README.md
+++ b/README.md
@@ -20,8 +20,6 @@ Copy and paste [`c/`](./c/) directory, and you should be good to go!
 - **Run `make dev` to compile the program in debug mode.**
 - **Run `make clean` to clean artifacts.**
 
-> Note that in headers, the syntax is `PROJECTNAME_FILENAME_H`
-
 ## C++
 
 Copy and paste [`cpp/`](./cpp/) directory, and you should be good to go!
@@ -32,8 +30,6 @@ Copy and paste [`cpp/`](./cpp/) directory, and you should be good to go!
 - **Run `make dev` to compile the program in debug mode.**
 - **Run `make clean` to clean artifacts.**
 
-> Note that in headers, the syntax is `PROJECTNAME_FILENAME_HPP`
-
 ## LaTeX
 
 ### Document
diff --git a/c/includes/example.h b/c/includes/example.h
index 974d8e5..6aef63a 100644
--- a/c/includes/example.h
+++ b/c/includes/example.h
@@ -1,8 +1,5 @@
-#ifndef PROJECT_EXAMPLE_H
-#define PROJECT_EXAMPLE_H 1
+#pragma once
 
 #include <stdio.h>
 
 void example();
-
-#endif
diff --git a/cpp/includes/Example.hpp b/cpp/includes/Example.hpp
index c76cdf2..4a0b596 100644
--- a/cpp/includes/Example.hpp
+++ b/cpp/includes/Example.hpp
@@ -1,5 +1,4 @@
-#ifndef PROJECT_EXAMPLE_HPP
-#define PROJECT_EXAMPLE_HPP 1
+#pragma once
 
 #include <iostream>
 
@@ -13,5 +12,3 @@ public:
   Example(const Example &);                  // copy constructor
   const Example &operator=(const Example &); // copy assignement
 };
-
-#endif