diff --git a/rust/helpers/rbtree.c b/rust/helpers/rbtree.c
index 2a0eabbb4160..a85defb22ff7 100644
--- a/rust/helpers/rbtree.c
+++ b/rust/helpers/rbtree.c
@@ -2,18 +2,19 @@
 
 #include <linux/rbtree.h>
 
-void rust_helper_rb_link_node(struct rb_node *node, struct rb_node *parent,
-			      struct rb_node **rb_link)
+__rust_helper void rust_helper_rb_link_node(struct rb_node *node,
+					    struct rb_node *parent,
+					    struct rb_node **rb_link)
 {
 	rb_link_node(node, parent, rb_link);
 }
 
-struct rb_node *rust_helper_rb_first(const struct rb_root *root)
+__rust_helper struct rb_node *rust_helper_rb_first(const struct rb_root *root)
 {
 	return rb_first(root);
 }
 
-struct rb_node *rust_helper_rb_last(const struct rb_root *root)
+__rust_helper struct rb_node *rust_helper_rb_last(const struct rb_root *root)
 {
 	return rb_last(root);
 }