diff --git a/src/e3/anod/spec.py b/src/e3/anod/spec.py
index a9e2f1a0..41f7c005 100644
--- a/src/e3/anod/spec.py
+++ b/src/e3/anod/spec.py
@@ -203,6 +203,26 @@ class MyProduct(Anod):
     ExternalSourceBuilder = e3.anod.package.ExternalSourceBuilder
     ThirdPartySourceBuilder = e3.anod.package.ThirdPartySourceBuilder
 
+    def __new__(cls, *args: Any, **kwargs: Any) -> Any:
+        """Replace `method` by property when decorator is missing."""
+        should_be_property = (
+            "enable_name_generator",
+            "readme_info",
+            "base_name",
+            "build_space_name",
+            "has_package",
+            "package",
+            "component",
+            "source_pkg_build",
+        )
+
+        for prop in should_be_property:
+            class_property = getattr(cls, prop)
+            if callable(class_property):
+                setattr(cls, prop, property(fget=class_property))
+
+        return super().__new__(cls)
+
     def __init__(
         self,
         qualifier: str,
diff --git a/tests/tests_e3/anod/spec_test.py b/tests/tests_e3/anod/spec_test.py
index b4772b0b..eacbd273 100644
--- a/tests/tests_e3/anod/spec_test.py
+++ b/tests/tests_e3/anod/spec_test.py
@@ -147,3 +147,12 @@ class GeneratorDisabled(Anod):
 
     assert spec_enable.args == {"q1": True}
     assert spec_disable.args == {"q1": ""}
+
+
+def test_missing_property():
+    class NoProperty(Anod):
+        def source_pkg_build(self) -> list:
+            return []
+
+    noproperty = NoProperty(qualifier="", kind="source")
+    assert noproperty.source_pkg_build == []