diff --git a/docs/introduction/di_in_python.rst b/docs/introduction/di_in_python.rst
index b772cf34..65a3727c 100644
--- a/docs/introduction/di_in_python.rst
+++ b/docs/introduction/di_in_python.rst
@@ -103,21 +103,18 @@ Listing of ``example.engines`` module:
 
 .. literalinclude:: ../../examples/miniapps/engines_cars/example/engines.py
    :language: python
-   :linenos:
 
 Listing of ``example.cars`` module:
 
 .. literalinclude:: ../../examples/miniapps/engines_cars/example/cars.py
    :language: python
-   :linenos:
 
 Next example demonstrates creation of several cars with different engines:
 
 .. literalinclude:: ../../examples/miniapps/engines_cars/example_di.py
    :language: python
-   :linenos:
 
-While previous example demonstrates advantages of dependency injection, there 
+While previous example demonstrates advantages of dependency injection, there
 is a disadvantage demonstration as well - creation of car requires additional 
 code for specification of dependencies. Nevertheless, this disadvantage could 
 be easily avoided by using a dependency injection framework for creation of 
@@ -128,7 +125,6 @@ using :doc:`Dependency Injector <../index>`:
 
 .. literalinclude:: ../../examples/miniapps/engines_cars/example_ioc_containers.py
    :language: python
-   :linenos:
 
 Useful links
 ~~~~~~~~~~~~
diff --git a/examples/miniapps/engines_cars/example/engines.py b/examples/miniapps/engines_cars/example/engines.py
index 9cdfd357..191f9e88 100644
--- a/examples/miniapps/engines_cars/example/engines.py
+++ b/examples/miniapps/engines_cars/example/engines.py
@@ -4,8 +4,8 @@
 class Engine:
     """Example engine base class.
 
-    Engine is a heart of every car. Engine is a very common term and could be
-    implemented in very different ways.
+    Engine is a heart of every car. Engine is a very common term and
+    could be implemented in very different ways.
     """