diff --git a/fuzzers/frida_libpng/src/fuzzer.rs b/fuzzers/frida_libpng/src/fuzzer.rs
index fac6bb3a4f..107ca21aec 100644
--- a/fuzzers/frida_libpng/src/fuzzer.rs
+++ b/fuzzers/frida_libpng/src/fuzzer.rs
@@ -16,7 +16,7 @@ use libafl::{
         ondisk::OnDiskMetadataFormat, Corpus, IndexesLenTimeMinimizerCorpusScheduler, OnDiskCorpus,
         QueueCorpusScheduler,
     },
-    events::EventConfig,
+    events::{llmp::LlmpRestartingEventManager, EventConfig, HasEventManagerId},
     executors::{
         inprocess::InProcessExecutor, timeout::TimeoutExecutor, Executor, ExitKind, HasObservers,
         ShadowExecutor,
@@ -294,9 +294,13 @@ unsafe fn fuzz(
 
     let shmem_provider = StdShMemProvider::new()?;
 
-    let mut run_client = |state: Option<StdState<_, _, _, _, _>>, mut mgr, _core_id| {
+    let mut run_client = |state: Option<StdState<_, _, _, _, _>>,
+                          mut mgr: LlmpRestartingEventManager<_, _, _, _>,
+                          _core_id| {
         // The restarting state will spawn the same process again as child, then restarted it each time it crashes.
 
+        // println!("{:?}", mgr.mgr_id());
+
         let lib = libloading::Library::new(module_name).unwrap();
         let target_func: libloading::Symbol<
             unsafe extern "C" fn(data: *const u8, size: usize) -> i32,
diff --git a/libafl/src/events/mod.rs b/libafl/src/events/mod.rs
index fadb0f6641..62546a5ed9 100644
--- a/libafl/src/events/mod.rs
+++ b/libafl/src/events/mod.rs
@@ -19,7 +19,7 @@ use crate::{
 
 /// A per-fuzzer unique `ID`, usually starting with `0` and increasing
 /// by `1` in multiprocessed `EventManager`s, such as [`self::llmp::LlmpEventManager`].
-#[derive(Clone, Copy, PartialEq, Eq)]
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
 pub struct EventManagerId {
     /// The id
     pub id: usize,