diff --git a/2024-07-27-sys-write-string.md b/2024-07-27-sys-write-string.md
index 2304fbb..0fe08e4 100644
--- a/2024-07-27-sys-write-string.md
+++ b/2024-07-27-sys-write-string.md
@@ -12,7 +12,7 @@ An approachable way for beginners to understand how syscalls are made in Linux i
 
 Looking at that table, it can be concluded the following registers need to be populated:
 
-- `rdi` → the call identifier. for `sys_write`, it's `1` from reading the first column of that table
+- `rax` → the call identifier. for `sys_write`, it's `1` from reading the first column of that table
 - `rdi` → file descriptor, `1` being for `stdout`
 - `rsi` → contents of buffer (i.e. the string)
 - `rdx` → length of the buffer for stdout
@@ -23,7 +23,7 @@ The first step is to define the `.data` section and initialize memory for `rsi`.
 The syntax looks like this:
 <variable name> <type> <value>
 
-`0xa` is just the ASCII hex representation of a new line.
+`0x0a` is just the ASCII hex representation of a new line.
 
 ```
 ;       sys_write_string.asm