diff --git a/src/cpl_query/__init__.py b/src/cpl_query/__init__.py
index c3c0020a..f35af1d7 100644
--- a/src/cpl_query/__init__.py
+++ b/src/cpl_query/__init__.py
@@ -15,11 +15,11 @@ __title__ = 'cpl_query'
 __author__ = 'Sven Heidemann'
 __license__ = 'MIT'
 __copyright__ = 'Copyright (c) 2020 - 2021 sh-edraft.de'
-__version__ = '2021.11.0.post2'
+__version__ = '2021.11.0.post3'
 
 from collections import namedtuple
 
 # imports: 
 
 VersionInfo = namedtuple('VersionInfo', 'major minor micro')
-version_info = VersionInfo(major='2021', minor='11', micro='0.post2')
+version_info = VersionInfo(major='2021', minor='11', micro='0.post3')
diff --git a/src/cpl_query/_query/__init__.py b/src/cpl_query/_query/__init__.py
index dbdb0c88..341c50f0 100644
--- a/src/cpl_query/_query/__init__.py
+++ b/src/cpl_query/_query/__init__.py
@@ -15,11 +15,11 @@ __title__ = 'cpl_query._query'
 __author__ = 'Sven Heidemann'
 __license__ = 'MIT'
 __copyright__ = 'Copyright (c) 2020 - 2021 sh-edraft.de'
-__version__ = '2021.11.0.post2'
+__version__ = '2021.11.0.post3'
 
 from collections import namedtuple
 
 # imports:
 
 VersionInfo = namedtuple('VersionInfo', 'major minor micro')
-version_info = VersionInfo(major='2021', minor='11', micro='0.post2')
+version_info = VersionInfo(major='2021', minor='11', micro='0.post3')
diff --git a/src/cpl_query/_query/where.py b/src/cpl_query/_query/where.py
index 94d555fe..81020f75 100644
--- a/src/cpl_query/_query/where.py
+++ b/src/cpl_query/_query/where.py
@@ -11,7 +11,7 @@ def where_query(_list: IterableABC, _func: Callable) -> IterableABC:
     if _func is None:
         raise ArgumentNoneException(ExceptionArgument.func)
 
-    result = IterableABC()
+    result = IterableABC(_list.type)
     for element in _list:
         if _func(element):
             result.append(element)
diff --git a/src/cpl_query/cpl_query.json b/src/cpl_query/cpl_query.json
index 3484e395..a8aa8239 100644
--- a/src/cpl_query/cpl_query.json
+++ b/src/cpl_query/cpl_query.json
@@ -4,7 +4,7 @@
     "Version": {
       "Major": "2021",
       "Minor": "11",
-      "Micro": "0.post2"
+      "Micro": "0.post3"
     },
     "Author": "Sven Heidemann",
     "AuthorEmail": "sven.heidemann@sh-edraft.de",
diff --git a/src/cpl_query/extension/__init__.py b/src/cpl_query/extension/__init__.py
index f09b1bb5..ea93d326 100644
--- a/src/cpl_query/extension/__init__.py
+++ b/src/cpl_query/extension/__init__.py
@@ -15,7 +15,7 @@ __title__ = 'cpl_query.extension'
 __author__ = 'Sven Heidemann'
 __license__ = 'MIT'
 __copyright__ = 'Copyright (c) 2020 - 2021 sh-edraft.de'
-__version__ = '2021.11.0.post2'
+__version__ = '2021.11.0.post3'
 
 from collections import namedtuple
 
@@ -27,4 +27,4 @@ from .ordered_iterable_abc import OrderedIterableABC
 from .ordered_iterable import OrderedIterable
 
 VersionInfo = namedtuple('VersionInfo', 'major minor micro')
-version_info = VersionInfo(major='2021', minor='11', micro='0.post2')
+version_info = VersionInfo(major='2021', minor='11', micro='0.post3')
diff --git a/src/cpl_query/extension/iterable.py b/src/cpl_query/extension/iterable.py
index 07049122..ff835382 100644
--- a/src/cpl_query/extension/iterable.py
+++ b/src/cpl_query/extension/iterable.py
@@ -43,7 +43,7 @@ class Iterable(IterableABC):
     def count(self, func: Callable = None) -> int:
         return count_query(self, func)
 
-    def distinct(self, func: Callable) -> IterableABC:
+    def distinct(self, func: Callable = None) -> IterableABC:
         return self.__to_self(distinct_query(self, func))
 
     def element_at(self, index: int) -> any:
diff --git a/src/cpl_query/extension/iterable_abc.py b/src/cpl_query/extension/iterable_abc.py
index 24a4a13f..45135c6e 100644
--- a/src/cpl_query/extension/iterable_abc.py
+++ b/src/cpl_query/extension/iterable_abc.py
@@ -60,9 +60,8 @@ class IterableABC(ABC, list):
             __object: :class:`object`
                 value
         """
-        if self._type is not None and type(__object) != self._type and not isinstance(type(__object), self._type) \
-                and not issubclass(type(__object), self._type):
-            raise Exception(f'Unexpected type: {type(__object)}')
+        if self._type is not None and type(__object) != self._type and not isinstance(type(__object), self._type) and not issubclass(type(__object), self._type):
+            raise Exception(f'Unexpected type: {type(__object)}\nExpected type: {self._type}')
 
         if len(self) == 0 and self._type is None:
             self._type = type(__object)