diff --git a/listings/chap2/endianness/endianness.asm b/listings/chap2/endianness/endianness.asm
index 00cc5a7..cd87bb5 100755
--- a/listings/chap2/endianness/endianness.asm
+++ b/listings/chap2/endianness/endianness.asm
@@ -2,8 +2,12 @@ section .data
 
 newline_char: db 10
 codes: db '0123456789abcdef'
-global _start                       
-                                     
+
+demo1: dq 0x1122334455667788
+demo2: db 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88
+
+global _start
+section .text
 
 print_newline:
     mov rax, 1
@@ -18,42 +22,36 @@ print_newline:
 print_hex:
     mov rax, rdi
 
-	mov rcx, 64                 
-iterate:                            
-	push rax                    
-	sub rcx, 4                  
-	sar rax, cl                 
-	and rax, 0xf                
-	lea rsi, [codes + rax]      
-	mov rax, 1                  
-
-	push rcx         					 
-    mov rdi, 1                  
-	mov rdx, 1                  
-	syscall                     
-	pop rcx                     
-	
+	mov rcx, 64
+iterate:
+	push rax
+	sub rcx, 4
+	sar rax, cl
+	and rax, 0xf
+	lea rsi, [codes + rax]
+	mov rax, 1
+
+	push rcx
+    mov rdi, 1
+	mov rdx, 1
+	syscall
+	pop rcx
+
 	pop rax
 	test rcx, rcx
-	jnz iterate   
-    
-    ret	
+	jnz iterate
 
-section .data
-demo1: dq 0x1122334455667788
-demo2: db 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88
-
-section .text
+    ret
 
 _start:
     mov rdi, [demo1]
     call print_hex
     call print_newline
-    
+
     mov rdi, [demo2]
     call print_hex
     call print_newline
-    
+
     mov rax, 60
     xor rdi, rdi
     syscall