diff --git a/helpers.h b/helpers.h
index 5de7225..9c9dcc6 100644
--- a/helpers.h
+++ b/helpers.h
@@ -18,8 +18,8 @@
 int drv_dumb_bo_destroy(struct bo *bo);
 int drv_gem_bo_destroy(struct bo *bo);
 int drv_prime_bo_import(struct bo *bo, struct drv_import_fd_data *data);
-void *drv_dumb_bo_map(struct bo *bo, struct mapping *mapping, size_t plane, uint32_t map_flags);
-int drv_bo_munmap(struct bo *bo, struct mapping *mapping);
+void *drv_dumb_bo_map(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags);
+int drv_bo_munmap(struct bo *bo, struct vma *vma);
 int drv_mapping_destroy(struct bo *bo);
 int drv_get_prot(uint32_t map_flags);
 uintptr_t drv_get_reference_count(struct driver *drv, struct bo *bo, size_t plane);