1 files changed, 1 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 02a4a17..415dcfd 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@ all: cython
 
 .PHONY: black
 black:
-	black msgpack/ test/ setup.py
+	black -S msgpack/ test/ setup.py
 
 .PHONY: cython
 cython: