diff --git a/core/my_basic.c b/core/my_basic.c
index 9573666..a4029dd 100755
--- a/core/my_basic.c
+++ b/core/my_basic.c
@@ -12349,7 +12349,7 @@ int mb_set_memory_manager(mb_memory_allocate_func_t a, mb_memory_free_func_t f)
 	_mb_allocate_func = a;
 	_mb_free_func = f;
 
-	return 0;
+	return MB_FUNC_OK;
 }
 
 /* ========================================================} */
diff --git a/sample/sample06.bas b/sample/sample06.bas
index f7d92e8..15fe2cf 100644
--- a/sample/sample06.bas
+++ b/sample/sample06.bas
@@ -1,4 +1,4 @@
-' This script is an example of MY-BASIC
+' This script is an example of MY-BASIC
 ' Copyright (c) 2011 - 2016 Wang Renxin. All rights reserved.
 ' For more information, see https://github.com/paladin-t/my_basic/
 
diff --git a/sample/sample07.bas b/sample/sample07.bas
index 38796e3..d9d9804 100644
--- a/sample/sample07.bas
+++ b/sample/sample07.bas
@@ -1,4 +1,4 @@
-' This script is an example of MY-BASIC
+' This script is an example of MY-BASIC
 ' Copyright (c) 2011 - 2016 Wang Renxin. All rights reserved.
 ' For more information, see https://github.com/paladin-t/my_basic/
 
diff --git a/sample/yard/README.md b/sample/yard/README.md
index be4c32f..23f503d 100644
--- a/sample/yard/README.md
+++ b/sample/yard/README.md
@@ -2,7 +2,7 @@
 
 **Copyright (C) 2016 Wang Renxin. All rights reserved.**
 
-Yet Another RPG Dungeon is a text based game. It's aimed to be a comprehensive example and or a tutorial which shows multiple concepts of MY-BASIC.
+Yet Another RPG Dungeon is a text based game. It's aimed to be a comprehensive example and or a tutorial which shows multiple aspects of MY-BASIC.
 
 ### Usage