diff --git a/splunklib/results.py b/splunklib/results.py
index 09cbe00a..29224a29 100644
--- a/splunklib/results.py
+++ b/splunklib/results.py
@@ -114,7 +114,7 @@ def _parse_results(self, stream):
         """Parse results and messages out of *stream*."""
         msg_type = None
         text = None
-        for line in stream.readlines():
+        for line in stream:
             strip_line = line.strip()
             if strip_line.__len__() == 0:
                 continue
diff --git a/tests/unit/test_results.py b/tests/unit/test_results.py
new file mode 100644
index 00000000..e42784ee
--- /dev/null
+++ b/tests/unit/test_results.py
@@ -0,0 +1,52 @@
+# Copyright (c) 2011-2026 Splunk, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"): you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+from collections.abc import Iterator
+from unittest.mock import patch
+
+from splunklib.results import JSONResultsReader, Message
+
+
+class IterOnlyStream:
+    lines: list[bytes]
+
+    def __init__(self, lines: list[bytes]) -> None:
+        self.lines = lines
+
+    def __iter__(self) -> Iterator[bytes]:
+        return iter(self.lines)
+
+    def readlines(self) -> list[bytes]:
+        raise AssertionError("JSONResultsReader should iterate over the stream")
+
+
+def test_json_results_reader_iterates_stream_without_readlines() -> None:
+    stream = IterOnlyStream(
+        [
+            b'{"preview": false, "messages": [{"type": "INFO", "text": "done"}]}\n',
+            b'{"result": {"host": "localhost"}}\n',
+            b'{"results": [{"count": "1"}, {"count": "2"}]}\n',
+        ]
+    )
+
+    with patch("splunklib.results.BufferedReader", return_value=stream):
+        reader = JSONResultsReader(object())
+
+    assert list(reader) == [
+        Message("INFO", "done"),
+        {"host": "localhost"},
+        {"count": "1"},
+        {"count": "2"},
+    ]
+    assert reader.is_preview is False