diff --git a/src/bpf_helper_defs.h b/src/bpf_helper_defs.h
index a505262..70b50e6 100644
--- a/src/bpf_helper_defs.h
+++ b/src/bpf_helper_defs.h
@@ -4,6 +4,7 @@
 struct bpf_fib_lookup;
 struct bpf_perf_event_data;
 struct bpf_perf_event_value;
+struct bpf_pidns_info;
 struct bpf_sock;
 struct bpf_sock_addr;
 struct bpf_sock_ops;