diff --git a/src/arena.c b/src/arena.c
index 9915cdcf..48fa0315 100644
--- a/src/arena.c
+++ b/src/arena.c
@@ -563,7 +563,7 @@ static mi_page_t* mi_arenas_page_try_find_abandoned(mi_subproc_t* subproc, size_
       _mi_page_free_collect(page, false);  // update `used` count
       mi_assert_internal(mi_bbitmap_is_clearN(arena->slices_free, slice_index, slice_count));
       mi_assert_internal(page->slice_committed > 0 || mi_bitmap_is_setN(arena->slices_committed, slice_index, slice_count));
-      mi_assert_internal(mi_bitmap_is_clearN(arena->slices_free, slice_index, slice_count));
+      mi_assert_internal(mi_bbitmap_is_clearN(arena->slices_free, slice_index, slice_count));
       mi_assert_internal(mi_bitmap_is_setN(arena->slices_dirty, slice_index, slice_count));
       mi_assert_internal(_mi_is_aligned(page, MI_PAGE_ALIGN));
       mi_assert_internal(_mi_ptr_page(page)==page);