diff --git a/examples/cgroup-skb-egress/cgroup-skb-egress/src/main.rs b/examples/cgroup-skb-egress/cgroup-skb-egress/src/main.rs
index 93eb87f..dde5439 100644
--- a/examples/cgroup-skb-egress/cgroup-skb-egress/src/main.rs
+++ b/examples/cgroup-skb-egress/cgroup-skb-egress/src/main.rs
@@ -61,7 +61,7 @@ async fn main() -> Result<(), anyhow::Error> {
     let mut perf_array =
         AsyncPerfEventArray::try_from(bpf.take_map("EVENTS").unwrap())?;
 
-    for cpu_id in online_cpus()? {
+    for cpu_id in online_cpus().map_err(|(_, error) error)? {
         let mut buf = perf_array.open(cpu_id, None)?;
 
         task::spawn(async move {