diff --git a/.pylintrc b/.pylintrc
index fd195bc..1cbae5d 100644
--- a/.pylintrc
+++ b/.pylintrc
@@ -6,6 +6,7 @@ disable = missing-docstring, too-few-public-methods, invalid-name
 
 [SIMILARITIES]
 
+min-similarity-lines=6
 ignore-comments=yes
 ignore-docstrings=yes
 ignore-imports=yes
diff --git a/lib/tfw/event_handlers/event_handler_base.py b/lib/tfw/event_handlers/event_handler_base.py
index bb3155f..95300fc 100644
--- a/lib/tfw/event_handlers/event_handler_base.py
+++ b/lib/tfw/event_handlers/event_handler_base.py
@@ -118,7 +118,6 @@ class EventHandlerBase(ABC):
         Perform cleanup actions such as releasing database
         connections and stuff like that.
         """
-        pass
 
     @classmethod
     def get_local_instances(cls):
diff --git a/lib/tfw/event_handlers/fsm_aware.py b/lib/tfw/event_handlers/fsm_aware.py
index bec3633..13cea43 100644
--- a/lib/tfw/event_handlers/fsm_aware.py
+++ b/lib/tfw/event_handlers/fsm_aware.py
@@ -42,4 +42,3 @@ class FSMAware:
 
         :param kwargs: fsm_update 'data' field
         """
-        pass