diff --git a/README.md b/README.md
index b1a74f1..6492470 100644
--- a/README.md
+++ b/README.md
@@ -76,9 +76,9 @@ enum {           // [name, 8-bit value]
 
 ### Build
 On file "preprocessor.c" define the OS where you want to run TYVM:
-
-  #define __UNIX
-
+``` 
+#define __UNIX
+``` 
 Uncomment this line if you want to build for Unix based OS, otherwise comment it out to build for Windows
 Build using the command:
 ```