diff --git a/kernel/sysabi.md b/kernel/sysabi.md
index 311b682..720d56f 100644
--- a/kernel/sysabi.md
+++ b/kernel/sysabi.md
@@ -54,9 +54,9 @@ The following calls should be implemented to some degree in noxos 1.0.
 | 0x0207 | `nx_proc_thread_kill`        | Kills the current processes' thread with thread id _tid_.                                                                                 | tid    |          |      |      | status | N/A    |
 
 ## Drivers
-| ID     | Name                           | Description                                                     | Arg1  | Arg2 | Arg3 | Arg4 | Result | Status | 
-|--------|--------------------------------|-----------------------------------------------------------------|-------|------|------|------|--------|--------|
-| 0x0301 | `nx_drv_register`              | Registers the executable at the file descriptor _fd_ as driver. | fd    |      |      |      | status | N/A    |
+| ID     | Name                           | Description                                                                                                | Arg1  | Arg2 | Arg3 | Arg4 | Result | Status      | 
+|--------|--------------------------------|------------------------------------------------------------------------------------------------------------|-------|------|------|------|--------|-------------|
+| 0x0301 | `nx_drv_register`              | Registers the executable at the file descriptor _fd_ as driver. The drivers' ID will be written into _id_. | fd    | *id  |      |      | status | Implemented |
 
 ## Kernel
 These syscalls can only be called from the kernel process.