diff --git a/tests/unit/browser/test_webelem.py b/tests/unit/browser/test_webelem.py
index bed604fa1..2979473a3 100644
--- a/tests/unit/browser/test_webelem.py
+++ b/tests/unit/browser/test_webelem.py
@@ -644,7 +644,7 @@ class TestJavascriptEscape:
         """Test javascript escaping with a real QWebPage."""
         self._test_escape(text, qtbot, webframe)
 
-    @pytest.mark.qt_log_ignore('^load glyph failed')
+    @pytest.mark.qt_log_ignore('^load glyph failed', extend=True)
     @hypothesis.given(hypothesis.strategies.text())
     def test_real_escape_hypothesis(self, webframe, qtbot, text):
         """Test javascript escaping with a real QWebPage and hypothesis."""
diff --git a/tests/unit/misc/test_guiprocess.py b/tests/unit/misc/test_guiprocess.py
index 4e4ee162b..2bbd06191 100644
--- a/tests/unit/misc/test_guiprocess.py
+++ b/tests/unit/misc/test_guiprocess.py
@@ -109,7 +109,7 @@ def test_start_env(monkeypatch, qtbot, py_proc):
 
 
 @pytest.mark.not_frozen
-@pytest.mark.qt_log_ignore('QIODevice::read.*: WriteOnly device')
+@pytest.mark.qt_log_ignore('QIODevice::read.*: WriteOnly device', extend=True)
 def test_start_mode(proc, qtbot, py_proc):
     """Test simply starting a process with mode parameter."""
     with qtbot.waitSignals([proc.started, proc.finished], raising=True,
diff --git a/tests/unit/utils/test_error.py b/tests/unit/utils/test_error.py
index 6e1133643..8cda5d1cd 100644
--- a/tests/unit/utils/test_error.py
+++ b/tests/unit/utils/test_error.py
@@ -74,7 +74,8 @@ def test_no_err_windows(caplog, exc, name, exc_text):
 # See https://github.com/The-Compiler/qutebrowser/issues/984
 @pytest.mark.qt_log_ignore(r'^QXcbConnection: XCB error: 8 \(BadMatch\), '
                            r'sequence: \d+, resource id: \d+, major code: 42 '
-                           r'\(SetInputFocus\), minor code: 0$')
+                           r'\(SetInputFocus\), minor code: 0$',
+                           extend=True)
 @pytest.mark.parametrize('pre_text, post_text, expected', [
     ('', '', 'exception'),
     ('foo', '', 'foo: exception'),
diff --git a/tests/unit/utils/test_qtutils.py b/tests/unit/utils/test_qtutils.py
index 32ea97e9e..8791b6779 100644
--- a/tests/unit/utils/test_qtutils.py
+++ b/tests/unit/utils/test_qtutils.py
@@ -338,7 +338,8 @@ class TestSerializeStream:
 
         assert src_obj == dest_obj
 
-    @pytest.mark.qt_log_ignore('^QIODevice::write.*: ReadOnly device')
+    @pytest.mark.qt_log_ignore('^QIODevice::write.*: ReadOnly device',
+                               extend=True)
     def test_serialize_readonly_stream(self):
         """Test serialize_stream with a read-only stream."""
         data = QByteArray()
@@ -348,7 +349,8 @@ class TestSerializeStream:
         assert str(excinfo.value) == ("The data stream cannot write to the "
                                       "underlying device.")
 
-    @pytest.mark.qt_log_ignore('QIODevice::read.*: WriteOnly device')
+    @pytest.mark.qt_log_ignore('QIODevice::read.*: WriteOnly device',
+                               extend=True)
     def test_deserialize_writeonly_stream(self):
         """Test deserialize_stream with a write-only stream."""
         data = QByteArray()
@@ -707,7 +709,7 @@ class TestPyQIODevice:
         with pytest.raises(io.UnsupportedOperation):
             pyqiodev.fileno()
 
-    @pytest.mark.qt_log_ignore('^QBuffer::seek: Invalid pos:')
+    @pytest.mark.qt_log_ignore('^QBuffer::seek: Invalid pos:', extend=True)
     @pytest.mark.parametrize('offset, whence, pos, data, raising', [
         (0, io.SEEK_SET, 0, b'1234567890', False),
         (42, io.SEEK_SET, 0, b'1234567890', True),