diff --git a/src/boot.S b/src/boot.S
index b1c0205..293513c 100644
--- a/src/boot.S
+++ b/src/boot.S
@@ -25,54 +25,54 @@ doesn't make sense to return from this function as the bootloader is gone.
 .global _start
 .type _start, @function
 _start:
-	/*
-	The bootloader has loaded us into 32-bit protected mode on a x86
-	machine. Interrupts are disabled. Paging is disabled. The processor
-	state is as defined in the multiboot standard. The kernel has full
-	control of the CPU. The kernel can only make use of hardware features
-	and any code it provides as part of itself. There's no printf
-	function, unless the kernel provides its own <stdio.h> header and a
-	printf implementation. There are no security restrictions, no
-	safeguards, no debugging mechanisms, only what the kernel provides
-	itself. It has absolute and complete power over the
-	machine.
-	*/
+    /*
+    The bootloader has loaded us into 32-bit protected mode on a x86
+    machine. Interrupts are disabled. Paging is disabled. The processor
+    state is as defined in the multiboot standard. The kernel has full
+    control of the CPU. The kernel can only make use of hardware features
+    and any code it provides as part of itself. There's no printf
+    function, unless the kernel provides its own <stdio.h> header and a
+    printf implementation. There are no security restrictions, no
+    safeguards, no debugging mechanisms, only what the kernel provides
+    itself. It has absolute and complete power over the
+    machine.
+    */
  
-	/*
-	To set up a stack, we set the esp register to point to the top of the
-	stack (as it grows downwards on x86 systems). This is necessarily done
-	in assembly as languages such as C cannot function without a stack.
-	*/
-	mov $stack_top, %esp
+    /*
+    To set up a stack, we set the esp register to point to the top of the
+    stack (as it grows downwards on x86 systems). This is necessarily done
+    in assembly as languages such as C cannot function without a stack.
+    */
+    mov $stack_top, %esp
  
-	/*
-	This is a good place to initialize crucial processor state before the
-	high-level kernel is entered. It's best to minimize the early
-	environment where crucial features are offline. Note that the
-	processor is not fully initialized yet: Features such as floating
-	point instructions and instruction set extensions are not initialized
-	yet. The GDT should be loaded here. Paging should be enabled here.
-	C++ features such as global constructors and exceptions will require
-	runtime support to work as well.
-	*/
+    /*
+    This is a good place to initialize crucial processor state before the
+    high-level kernel is entered. It's best to minimize the early
+    environment where crucial features are offline. Note that the
+    processor is not fully initialized yet: Features such as floating
+    point instructions and instruction set extensions are not initialized
+    yet. The GDT should be loaded here. Paging should be enabled here.
+    C++ features such as global constructors and exceptions will require
+    runtime support to work as well.
+    */
 
-	/*
-	Enter the high-level kernel. The ABI requires the stack is 16-byte
-	aligned at the time of the call instruction (which afterwards pushes
-	the return pointer of size 4 bytes). The stack was originally 16-byte
-	aligned above and we've pushed a multiple of 16 bytes to the
-	stack since (pushed 0 bytes so far), so the alignment has thus been
-	preserved and the call is well defined.
-	*/
+    /*
+    Enter the high-level kernel. The ABI requires the stack is 16-byte
+    aligned at the time of the call instruction (which afterwards pushes
+    the return pointer of size 4 bytes). The stack was originally 16-byte
+    aligned above and we've pushed a multiple of 16 bytes to the
+    stack since (pushed 0 bytes so far), so the alignment has thus been
+    preserved and the call is well defined.
+    */
     push $0
     push $0
     push $0
     push %ebx
-	call hos_main
+    call hos_main
  
-	cli
-1:	hlt
-	jmp 1b
+    cli
+1:  hlt
+    jmp 1b
  
 /*
 Set the size of the _start symbol to the current location '.' minus its start.