diff --git a/library/std/src/sys/pal/mikros/process.rs b/library/std/src/sys/pal/mikros/process.rs
index 6b253ac3501..d0e4c86868e 100644
--- a/library/std/src/sys/pal/mikros/process.rs
+++ b/library/std/src/sys/pal/mikros/process.rs
@@ -134,15 +134,13 @@ pub fn spawn(
             .map(|arg| (0, arg.clone().into_encoded_bytes()))
             .collect::<Vec<(u32, Vec<u8>)>>();
         let pid = super::syscalls::new_process(entry as _, space).unwrap();
-        if let Some(vfs_pid) = syscalls::try_get_registered(0) {
+        if let Some(proc_man_pid) = syscalls::try_get_registered(3) {
             let res: Result<(), Errno> = postcard::from_bytes(
-                &rpc::send_call(vfs_pid, 2, 4, &postcard::to_allocvec(&(pid, stdio)).unwrap())
+                &rpc::send_call(proc_man_pid, 8, 0, &postcard::to_allocvec(&(pid, stdio)).unwrap())
                     .get_return(),
             )
             .unwrap();
             res?;
-        };
-        if let Some(proc_man_pid) = syscalls::try_get_registered(3) {
             let res: Result<(), Errno> = postcard::from_bytes(
                 &rpc::send_call(proc_man_pid, 8, 2, &postcard::to_allocvec(&(pid, args)).unwrap())
                     .get_return(),
diff --git a/library/std/src/sys/pal/mikros/stdio.rs b/library/std/src/sys/pal/mikros/stdio.rs
index 3d941fb5025..a2016e7b4ab 100644
--- a/library/std/src/sys/pal/mikros/stdio.rs
+++ b/library/std/src/sys/pal/mikros/stdio.rs
@@ -98,14 +98,14 @@ pub fn panic_output() -> Option<impl io::Write> {
 }
 
 pub fn init() {
-    let Some(vfs_pid) = syscalls::try_get_registered(0) else {
+    let Some(proc_man_pid) = syscalls::try_get_registered(3) else {
         STDIN_FD.get_or_init(|| None);
         STDOUT_FD.get_or_init(|| None);
         STDERR_FD.get_or_init(|| None);
         return;
     };
     let stdio: [Option<(u64, u64)>; 3] =
-        postcard::from_bytes(&rpc::send_call(vfs_pid, 2, 5, &[]).get_return()).unwrap();
+        postcard::from_bytes(&rpc::send_call(proc_man_pid, 8, 1, &[]).get_return()).unwrap();
     STDIN_FD.get_or_init(|| stdio[0]);
     STDOUT_FD.get_or_init(|| stdio[1]);
     STDERR_FD.get_or_init(|| stdio[2]);