diff --git a/domonic/dom.py b/domonic/dom.py
index 92cd8c3..429dcc2 100644
--- a/domonic/dom.py
+++ b/domonic/dom.py
@@ -752,6 +752,10 @@ def _iterate(self, element, callback) -> None:
         except Exception as e:
             print("_iterate error", e)
 
+    def __bool__(self):
+        # was previously falling back to __len__
+        return True
+
     def __len__(self):
         return len(self.args)
 
diff --git a/tests/test_dom.py b/tests/test_dom.py
index 5fd6946..349ddbe 100644
--- a/tests/test_dom.py
+++ b/tests/test_dom.py
@@ -1292,6 +1292,11 @@ def _checkPositions(self, node):
                         assert getattr(item, "parentNode", node) is node, f"parentNode is incorrect ({item.parentNode})"
                         self._checkPositions(item)
 
+    def test_truthiness(self):
+        doc = Document()
+        assert doc  # to support `if doc: ...`
+        assert bool(doc)  # more explicitly
+
     def test_Document(self):
         # There should be one-- and preferably only one --obvious way to do it.
         doc = Document()