diff --git a/Makefile b/Makefile
index 04f11cf..7689c87 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 black:
-	poetry run black kosmorrolib setup.py
+	poetry run black kosmorrolib
 
 .PHONY: tests
 tests: doctests