diff --git a/Makefile b/Makefile
index ef20f907..dfb3a201 100644
--- a/Makefile
+++ b/Makefile
@@ -17,7 +17,7 @@ pytest:
 .PHONY: black
 black:
 	poetry run black --check ${NORNIR_DIRS}
-	poetry run isort --profile black --check nornir tests
+	poetry run isort --profile black --check ${NORNIR_DIRS}
 
 .PHONY: sphinx
 sphinx:
diff --git a/docs/conf.py b/docs/conf.py
index 44136626..b788d0d6 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -21,10 +21,10 @@
 import sys
 from typing import Dict
 
-from nornir import __version__
-
 from sphinx.application import Sphinx
 
+from nornir import __version__
+
 sys.path.insert(0, os.path.abspath("../"))
 
 
diff --git a/docs/highlighter.py b/docs/highlighter.py
index 4f28db3c..5ece78a4 100644
--- a/docs/highlighter.py
+++ b/docs/highlighter.py
@@ -1,11 +1,9 @@
 from IPython.core.magic import register_line_magic
 from IPython.display import HTML
-
 from pygments import highlight
 from pygments.formatters import HtmlFormatter
 from pygments.lexers import get_lexer_for_filename
 
-
 HTML_TEMPLATE = """<style>
 {}
 </style>