diff --git a/abcmeta/__init__.py b/abcmeta/__init__.py
index 22b74ff..087ec85 100644
--- a/abcmeta/__init__.py
+++ b/abcmeta/__init__.py
@@ -157,8 +157,9 @@ def __init_subclass__(cls):
             # Make sure the derived class has implemented the abstract method.
             if name not in cls.__dict__:
                 raise AttributeError(
-                    "Derived class has not implemented '{}' method of the parent class.".format(
-                        name
+                    "Derived class '{}' has not implemented '{}' method of the"
+                    " parent class '{}'.".format(
+                        cls.__name__, name, cls.__base__.__name__
                     )
                 )
 
diff --git a/setup.py b/setup.py
index c9620cd..831531d 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
 
 setup(
     name="abcmeta",
-    version="1.0.1",
+    version="1.0.2",
     author="Morteza NourelahiAlamdari",
     author_email="m@0t1.me",
     description="Python meta class and abstract method library with restrictions.",