6 files changed, 10 insertions, 7 deletions
diff --git a/include/CompilerKit/Detail/32x0.h b/include/CompilerKit/Detail/32x0.h
index 7172a2d..ce22761 100644
--- a/include/CompilerKit/Detail/32x0.h
+++ b/include/CompilerKit/Detail/32x0.h
@@ -1,6 +1,6 @@
 /* ========================================
 
-  Copyright (C) 2024-2025 Amlal El Mahrouss, Licensed under the Apache 2.0 license
+  Copyright (C) 2024-2025 Amlal El Mahrouss, licensed under the Apache 2.0 license
 
 ======================================== */
 
diff --git a/include/CompilerKit/Detail/64x0.h b/include/CompilerKit/Detail/64x0.h
index ad909dc..23a0542 100644
--- a/include/CompilerKit/Detail/64x0.h
+++ b/include/CompilerKit/Detail/64x0.h
@@ -1,6 +1,6 @@
 /* ========================================
 
-  Copyright (C) 2024-2025 Amlal El Mahrouss, Licensed under the Apache 2.0 license
+  Copyright (C) 2024-2025 Amlal El Mahrouss, licensed under the Apache 2.0 license
 
 ======================================== */
 
diff --git a/include/CompilerKit/Detail/AMD64.h b/include/CompilerKit/Detail/AMD64.h
index 053b0b0..a4294ee 100644
--- a/include/CompilerKit/Detail/AMD64.h
+++ b/include/CompilerKit/Detail/AMD64.h
@@ -1,6 +1,6 @@
 /* ========================================
 
-  Copyright (C) 2024-2025 Amlal El Mahrouss, Licensed under the Apache 2.0 license
+  Copyright (C) 2024-2025 Amlal El Mahrouss, licensed under the Apache 2.0 license
 
 ======================================== */
 
diff --git a/include/CompilerKit/Detail/Aarch64.h b/include/CompilerKit/Detail/Aarch64.h
index 1ce1719..7b39e8b 100644
--- a/include/CompilerKit/Detail/Aarch64.h
+++ b/include/CompilerKit/Detail/Aarch64.h
@@ -1,6 +1,6 @@
 /* ========================================
 
-Copyright (C) 2024-2025 Amlal El Mahrouss, Licensed under the Apache 2.0 license
+Copyright (C) 2024-2025 Amlal El Mahrouss, licensed under the Apache 2.0 license
 
 ======================================== */
 
diff --git a/include/CompilerKit/Detail/Config.h b/include/CompilerKit/Detail/Config.h
index 198db7c..3935fa3 100644
--- a/include/CompilerKit/Detail/Config.h
+++ b/include/CompilerKit/Detail/Config.h
@@ -1,10 +1,11 @@
 /* ========================================
 
-  Copyright (C) 2024-2025 Amlal El Mahrouss, Licensed under the Apache 2.0 license
+  Copyright (C) 2024-2025 Amlal El Mahrouss, licensed under the Apache 2.0 license
 
 ======================================== */
 
-#pragma once
+#ifndef __COMPILERKIT_CONFIG_H__
+#define __COMPILERKIT_CONFIG_H__
 
 /// =========================================================== ///
 /// @file detail/Config.h
@@ -62,3 +63,5 @@ inline bool install_signal(Int32 signal, void (*handler)(int)) noexcept {
   return true;
 }
 }  // namespace CompilerKit
+
+#endif // __COMPILERKIT_CONFIG_H__
+\ No newline at end of file
diff --git a/include/CompilerKit/Detail/PreConfig.h b/include/CompilerKit/Detail/PreConfig.h
index 0279072..dc96377 100644
--- a/include/CompilerKit/Detail/PreConfig.h
+++ b/include/CompilerKit/Detail/PreConfig.h
@@ -1,6 +1,6 @@
 /* ========================================
 
-  Copyright (C) 2024-2025 Amlal El Mahrouss, Licensed under the Apache 2.0 license
+  Copyright (C) 2024-2025 Amlal El Mahrouss, licensed under the Apache 2.0 license
 
 ======================================== */