diff --git a/e2e/tasks/test_task_unnest b/e2e/tasks/test_task_unnest
deleted file mode 100644
index a10fbed98a..0000000000
--- a/e2e/tasks/test_task_unnest
+++ /dev/null
@@ -1,33 +0,0 @@
-#!/usr/bin/env bash
-
-cat <<EOF >.mise.toml
-[tasks.a]
-run = 'echo a'
-[tasks.b]
-run = ['echo b && mise run a']
-EOF
-
-assert "mise run --output prefix b" "\
-[b] b
-[a] a"
-
-cat <<EOF >.mise.toml
-[tasks.a]
-run = 'echo a'
-[tasks.b]
-run = ['echo b && mise run a']
-[tasks.c]
-run = ['echo c && mise run b']
-EOF
-
-assert "mise run --output prefix c" "\
-[c] c
-[b] b
-[a] a"
-
-assert "mise run --no-timings --output prefix c 2>&1" '[c] $ echo c && mise run b
-[c] c
-[b] $ echo b && mise run a
-[b] b
-[a] $ echo a
-[a] a'
diff --git a/src/cli/run.rs b/src/cli/run.rs
index 0a86371a36..91393af62c 100644
--- a/src/cli/run.rs
+++ b/src/cli/run.rs
@@ -555,7 +555,7 @@ impl Run {
                 }
             }
         }
-        if this.timings() && num_tasks > 1 && *env::MISE_TASK_LEVEL == 0 {
+        if this.timings() && num_tasks > 1 {
             let msg = format!("Finished in {}", time::format_duration(timer.elapsed()));
             eprintln!("{}", style::edim(msg));
         };
@@ -621,12 +621,6 @@ impl Run {
         let mut env = task.render_env(config, &ts).await?;
         let output = self.output(Some(task));
         env.insert("MISE_TASK_OUTPUT".into(), output.to_string());
-        if output == TaskOutput::Prefix {
-            env.insert(
-                "MISE_TASK_LEVEL".into(),
-                (*env::MISE_TASK_LEVEL + 1).to_string(),
-            );
-        }
         if !self.timings {
             env.insert("MISE_TASK_TIMINGS".to_string(), "0".to_string());
         }
diff --git a/src/env.rs b/src/env.rs
index 18237b3265..3527b67382 100644
--- a/src/env.rs
+++ b/src/env.rs
@@ -157,7 +157,6 @@ pub static MISE_IGNORED_CONFIG_PATHS: Lazy<Vec<PathBuf>> = Lazy::new(|| {
         })
         .unwrap_or_default()
 });
-pub static MISE_TASK_LEVEL: Lazy<u8> = Lazy::new(|| var_u8("MISE_TASK_LEVEL"));
 pub static MISE_USE_TOML: Lazy<bool> = Lazy::new(|| !var_is_false("MISE_USE_TOML"));
 pub static MISE_LIST_ALL_VERSIONS: Lazy<bool> = Lazy::new(|| var_is_true("MISE_LIST_ALL_VERSIONS"));
 pub static ARGV0: Lazy<String> = Lazy::new(|| ARGS.read().unwrap()[0].to_string());
diff --git a/src/output.rs b/src/output.rs
index 3d511061f5..ed9213be2b 100644
--- a/src/output.rs
+++ b/src/output.rs
@@ -1,41 +1,19 @@
-use regex::Regex;
 use std::collections::HashSet;
 use std::sync::LazyLock;
 use std::sync::Mutex;
 
-pub static UNNEST_RE: LazyLock<Regex> =
-    LazyLock::new(|| Regex::new(r#"MISE_TASK_UNNEST:(\d+):MISE_TASK_UNNEST (.*)"#).unwrap());
-
 #[macro_export]
 macro_rules! prefix_println {
     ($prefix:expr, $($arg:tt)*) => {{
         let msg = format!($($arg)*);
-        if let Some(msg) = $crate::output::UNNEST_RE.captures(&msg) {
-            let level = msg.get(1).unwrap().as_str().parse::<usize>().unwrap();
-            if level > 1 {
-                println!("MISE_TASK_UNNEST:{}:MISE_TASK_UNNEST {}", level - 1, msg.get(2).unwrap().as_str());
-            } else {
-                println!("{}", msg.get(2).unwrap().as_str());
-            }
-        } else {
-            println!("{} {}", $prefix, msg);
-        }
+        println!("{} {}", $prefix, msg);
     }};
 }
 #[macro_export]
 macro_rules! prefix_eprintln {
     ($prefix:expr, $($arg:tt)*) => {{
         let msg = format!($($arg)*);
-        if let Some(msg) = $crate::output::UNNEST_RE.captures(&msg) {
-            let level = msg.get(1).unwrap().as_str().parse::<usize>().unwrap();
-            if level > 1 {
-                eprintln!("MISE_TASK_UNNEST:{}:MISE_TASK_UNNEST {}", level - 1, msg.get(2).unwrap().as_str());
-            } else {
-                eprintln!("{}", msg.get(2).unwrap().as_str());
-            }
-        } else {
-            eprintln!("{} {}", $prefix, msg);
-        }
+        eprintln!("{} {}", $prefix, msg);
     }};
 }
 
diff --git a/src/task/mod.rs b/src/task/mod.rs
index 801f1514b3..9dcc03bd3e 100644
--- a/src/task/mod.rs
+++ b/src/task/mod.rs
@@ -500,15 +500,8 @@ impl Task {
             ]
         });
         let idx = self.display_name.chars().map(|c| c as usize).sum::<usize>() % COLORS.len();
-        let prefix = style::ereset() + &style::estyle(self.prefix()).fg(COLORS[idx]).to_string();
-        if *env::MISE_TASK_LEVEL > 0 {
-            format!(
-                "MISE_TASK_UNNEST:{}:MISE_TASK_UNNEST {prefix}",
-                *env::MISE_TASK_LEVEL
-            )
-        } else {
-            prefix
-        }
+
+        style::ereset() + &style::estyle(self.prefix()).fg(COLORS[idx]).to_string()
     }
 
     pub async fn dir(&self, config: &Arc<Config>) -> Result<Option<PathBuf>> {