diff --git a/lib/src/tree_cursor.c b/lib/src/tree_cursor.c
index 98b86605..4c6f1b82 100644
--- a/lib/src/tree_cursor.c
+++ b/lib/src/tree_cursor.c
@@ -448,6 +448,7 @@ TSTreeCursor ts_tree_cursor_copy(const TSTreeCursor *_cursor) {
   TSTreeCursor res = {NULL, NULL, {0, 0}};
   TreeCursor *copy = (TreeCursor *)&res;
   copy->tree = cursor->tree;
+  array_init(&copy->stack);
   array_push_all(&copy->stack, &cursor->stack);
   return res;
 }