diff --git a/lib/binding_rust/lib.rs b/lib/binding_rust/lib.rs
index e8d99a87..2e3403b4 100644
--- a/lib/binding_rust/lib.rs
+++ b/lib/binding_rust/lib.rs
@@ -942,8 +942,9 @@ impl<'tree> Node<'tree> {
     ///
     /// Syntax errors represent parts of the code that could not be incorporated into a
     /// valid syntax tree.
+    #[doc(alias = "ts_node_is_error")]
     pub fn is_error(&self) -> bool {
-        self.kind_id() == u16::MAX
+        unsafe { ffi::ts_node_is_error(self.0) }
     }
 
     /// Get this node's parse state.
diff --git a/lib/src/node.c b/lib/src/node.c
index 46028f37..092e96f8 100644
--- a/lib/src/node.c
+++ b/lib/src/node.c
@@ -473,15 +473,15 @@ bool ts_node_has_error(TSNode self) {
   return ts_subtree_error_cost(ts_node__subtree(self)) > 0;
 }
 
-uint32_t ts_node_descendant_count(TSNode self) {
-  return ts_subtree_visible_descendant_count(ts_node__subtree(self)) + 1;
-}
-
 bool ts_node_is_error(TSNode self) {
   TSSymbol symbol = ts_node_symbol(self);
   return symbol == ts_builtin_sym_error;
 }
 
+uint32_t ts_node_descendant_count(TSNode self) {
+  return ts_subtree_visible_descendant_count(ts_node__subtree(self)) + 1;
+}
+
 TSStateId ts_node_parse_state(TSNode self) {
   return ts_subtree_parse_state(ts_node__subtree(self));
 }