diff --git a/rust/helpers/pid_namespace.c b/rust/helpers/pid_namespace.c
index f41482bdec9a..f46ab779b527 100644
--- a/rust/helpers/pid_namespace.c
+++ b/rust/helpers/pid_namespace.c
@@ -3,18 +3,20 @@
 #include <linux/pid_namespace.h>
 #include <linux/cleanup.h>
 
-struct pid_namespace *rust_helper_get_pid_ns(struct pid_namespace *ns)
+__rust_helper struct pid_namespace *
+rust_helper_get_pid_ns(struct pid_namespace *ns)
 {
 	return get_pid_ns(ns);
 }
 
-void rust_helper_put_pid_ns(struct pid_namespace *ns)
+__rust_helper void rust_helper_put_pid_ns(struct pid_namespace *ns)
 {
 	put_pid_ns(ns);
 }
 
 /* Get a reference on a task's pid namespace. */
-struct pid_namespace *rust_helper_task_get_pid_ns(struct task_struct *task)
+__rust_helper struct pid_namespace *
+rust_helper_task_get_pid_ns(struct task_struct *task)
 {
 	struct pid_namespace *pid_ns;