diff --git a/libafl/src/bolts/launcher.rs b/libafl/src/bolts/launcher.rs
index d3b08bfdd5..d953fa33a7 100644
--- a/libafl/src/bolts/launcher.rs
+++ b/libafl/src/bolts/launcher.rs
@@ -222,18 +222,16 @@ where
                 //spawn clients
                 for (id, _) in core_ids.iter().enumerate().take(num_cores) {
                     if self.cores.iter().any(|&x| x == id) {
-                        for id in 0..num_cores {
-                            let stdio = if self.stdout_file.is_some() {
-                                Stdio::inherit()
-                            } else {
-                                Stdio::null()
-                            };
+                        let stdio = if self.stdout_file.is_some() {
+                            Stdio::inherit()
+                        } else {
+                            Stdio::null()
+                        };
 
-                            if self.cores.iter().any(|&x| x == id) {
-                                std::env::set_var(_AFL_LAUNCHER_CLIENT, id.to_string());
-                                let child = startable_self()?.stdout(stdio).spawn()?;
-                                handles.push(child);
-                            }
+                        if self.cores.iter().any(|&x| x == id) {
+                            std::env::set_var(_AFL_LAUNCHER_CLIENT, id.to_string());
+                            let child = startable_self()?.stdout(stdio).spawn()?;
+                            handles.push(child);
                         }
                     }
                 }