diff --git a/trino/dbapi.py b/trino/dbapi.py
index 62ce893b..47130dab 100644
--- a/trino/dbapi.py
+++ b/trino/dbapi.py
@@ -706,7 +706,8 @@ def cancel(self):
         self._query.cancel()
 
     def close(self):
-        self.cancel()
+        if self._query is not None:
+            self.cancel()
         # TODO: Cancel not only the last query executed on this cursor
         #  but also any other outstanding queries executed through this cursor.