diff --git a/tests/system/test_dbapi.py b/tests/system/test_dbapi.py
index 18bde6c94d..aa3fd610e1 100644
--- a/tests/system/test_dbapi.py
+++ b/tests/system/test_dbapi.py
@@ -420,6 +420,10 @@ def test_read_timestamp_client_side_autocommit(self):
         assert self._cursor.description[0].name == "SHOW_READ_TIMESTAMP"
         assert isinstance(read_timestamp_query_result_1[0][0], DatetimeWithNanoseconds)
 
+        self._conn.read_only = False
+        self._insert_row(3)
+
+        self._conn.read_only = True
         self._cursor.execute("SELECT * FROM contacts")
         self._cursor.execute("SHOW VARIABLE READ_TIMESTAMP")
         read_timestamp_query_result_2 = self._cursor.fetchall()