diff --git a/lib/src/subtree.c b/lib/src/subtree.c
index 42794de7..35f65738 100644
--- a/lib/src/subtree.c
+++ b/lib/src/subtree.c
@@ -407,7 +407,12 @@ void ts_subtree_summarize_children(
     self.ptr->dynamic_precedence += ts_subtree_dynamic_precedence(child);
     self.ptr->visible_descendant_count += ts_subtree_visible_descendant_count(child);
 
-    if (alias_sequence && alias_sequence[structural_index] != 0 && !ts_subtree_extra(child)) {
+    if (
+      !ts_subtree_extra(child) &&
+      ts_subtree_symbol(child) != 0 &&
+      alias_sequence &&
+      alias_sequence[structural_index] != 0
+    ) {
       self.ptr->visible_descendant_count++;
       self.ptr->visible_child_count++;
       if (ts_language_symbol_metadata(language, alias_sequence[structural_index]).named) {