diff --git a/test/fuzz/fuzzer.cc b/test/fuzz/fuzzer.cc
index 570dfa7e..6fe1e4cb 100644
--- a/test/fuzz/fuzzer.cc
+++ b/test/fuzz/fuzzer.cc
@@ -17,7 +17,7 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
   ts_parser_halt_on_error(parser, TS_HALT_ON_ERROR);
 
   TSTree *tree = ts_parser_parse_string(parser, NULL, str, size);
-  TSNode root_node = ts_document_root_node(tree);
+  TSNode root_node = ts_tree_root_node(tree);
 
   ts_tree_delete(tree);
   ts_parser_delete(parser);