diff --git a/qutebrowser/utils/debug.py b/qutebrowser/utils/debug.py
index c82c488da..811598582 100644
--- a/qutebrowser/utils/debug.py
+++ b/qutebrowser/utils/debug.py
@@ -156,7 +156,7 @@ def qflags_key(base, value, add_base=False, klass=None):
     names = []
     mask = 0x01
     value = int(value)
-    while mask < value:
+    while mask <= value:
         if value & mask:
             bits.append(mask)
         mask <<= 1
diff --git a/tests/unit/utils/test_debug.py b/tests/unit/utils/test_debug.py
index 093f801d9..da37e6b36 100644
--- a/tests/unit/utils/test_debug.py
+++ b/tests/unit/utils/test_debug.py
@@ -163,7 +163,7 @@ class TestQFlagsKey:
     fixme = pytest.mark.xfail(reason="See issue #42", raises=AssertionError)
 
     @pytest.mark.parametrize('base, value, klass, expected', [
-        fixme((Qt, Qt.AlignTop, None, 'AlignTop')),
+        (Qt, Qt.AlignTop, None, 'AlignTop'),
         fixme((Qt, Qt.AlignLeft | Qt.AlignTop, None, 'AlignLeft|AlignTop')),
         (Qt, Qt.AlignCenter, None, 'AlignHCenter|AlignVCenter'),
         fixme((Qt, 0x0021, Qt.Alignment, 'AlignLeft|AlignTop')),
@@ -173,7 +173,6 @@ class TestQFlagsKey:
         flags = debug.qflags_key(base, value, klass=klass)
         assert flags == expected
 
-    @fixme
     def test_add_base(self):
         """Test with add_base=True."""
         flags = debug.qflags_key(Qt, Qt.AlignTop, add_base=True)