diff --git a/src/main.rs b/src/main.rs
index 955fc31..5edcc56 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,7 +1,7 @@
 use nix::{
     libc::{c_long, EPERM, ORIG_RAX},
     sys::stat::Mode,
-    unistd::{getpid, getppid},
+    unistd::{getpid, getppid, Pid},
 };
 use std::io::Write;
 use std::{
@@ -74,7 +74,7 @@ fn main() -> anyhow::Result<()> {
 
             loop {
                 log::debug!("parent: waitpid...");
-                let waitstatus = waitpid(child, None)?;
+                let waitstatus = waitpid(Pid::from_raw(-1), None)?;
 
                 match waitstatus {
                     WaitStatus::Exited(pid, ret) => {