diff --git a/src/Makefile b/src/Makefile
index 517d29d..40c6c9a 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -3,8 +3,8 @@ CSTND := --std=c11
 CFLAGS := -o
 SRC := tyvm.c
 
-#OUT = tyvm-unix
-OUT := tyvm-win
+OUT = tyvm-unix
+#OUT := tyvm-win
 
 .PHONY: all clean
 all: tyvm
diff --git a/src/includes.h b/src/includes.h
index d9b2a43..2157a35 100644
--- a/src/includes.h
+++ b/src/includes.h
@@ -1,13 +1,5 @@
-/*
-    TYVM is a virtual machine based on LC-3 architecture for educational purposes.
-    Copyright (c) 2022 Erick Ahmed
-    Open-source software distributed under MIT license
-*/
-
 /* List of all the libraries needed to run tyvm.c */
 
-//#define __UNIX        // uncomment ONLY if compiling for unix-based operative system
-
 /* universal libraries */
     #include <stdint.h>
     #include <stdio.h>
diff --git a/src/registers.h b/src/registers.h
index fa8aaa8..be4dde5 100644
--- a/src/registers.h
+++ b/src/registers.h
@@ -1,8 +1,4 @@
-/*
-    TYVM is a virtual machine based on LC-3 architecture for educational purposes.
-    Copyright (c) 2022 Erick Ahmed
-    Open-source software distributed under MIT license
-*/
+/* initialization of registers and memory
 
 /* memory mapped register tables */
 enum mmr {
diff --git a/src/tyvm.c b/src/tyvm.c
index 7ab65ff..c8f1202 100644
--- a/src/tyvm.c
+++ b/src/tyvm.c
@@ -4,6 +4,8 @@
     Open-source software distributed under MIT license
 */
 
+#define __UNIX
+
 #include "includes.h"
 #include "registers.h"
 
@@ -370,4 +372,4 @@ int main(int argc, const char* argv[]) {
         }
     }
     restore_input_buffering();  //restore terminal settings when shutdown
-}
+}
\ No newline at end of file