diff --git a/pelican/contents.py b/pelican/contents.py
index 11459f77..bce45135 100644
--- a/pelican/contents.py
+++ b/pelican/contents.py
@@ -172,7 +172,7 @@ class Content:
     def _has_valid_mandatory_properties(self) -> bool:
         """Test mandatory properties are set."""
         for prop in self.mandatory_properties:
-            if not hasattr(self, prop):
+            if not hasattr(self, prop) or getattr(self, prop) in (None, ""):
                 logger.error(
                     "Skipping %s: could not find information about '%s'", self, prop
                 )
diff --git a/pelican/tests/test_contents.py b/pelican/tests/test_contents.py
index 4e48e594..780770ea 100644
--- a/pelican/tests/test_contents.py
+++ b/pelican/tests/test_contents.py
@@ -734,6 +734,16 @@ class TestArticle(TestBase):
         custom_article = Article(**article_kwargs)
         self.assertEqual("custom", custom_article.template)
 
+    def test_empty_title_invalid(self):
+        # articles with empty title should be invalid
+        settings = get_settings()
+        article_kwargs = self._copy_page_kwargs()
+        article_kwargs["metadata"]["title"] = ""
+        article_kwargs["metadata"]["date"] = datetime.datetime.now()
+        article_kwargs["settings"] = settings
+        article = Article(**article_kwargs)
+        self.assertFalse(article.is_valid())
+
     def test_slugify_category_author(self):
         settings = get_settings()
         settings["SLUG_REGEX_SUBSTITUTIONS"] = [