diff --git a/Makefile b/Makefile
index d8be001..2377581 100644
--- a/Makefile
+++ b/Makefile
@@ -7,7 +7,7 @@ YAMLLINT_TAG=baseimage-yamllint:latest
 
 validate:
 	#docker pull "${REGISTRY}"/"${YAMLLINT_TAG}"
-	docker run --rm $$(tty -s && echo "-it" || echo) -v `pwd`:/data "${REGISTRY}"/"${YAMLLINT_TAG}" .
+	docker run --rm -it -v `pwd`:/data "${REGISTRY}"/"${YAMLLINT_TAG}" .
 	#docker run --rm -v "`pwd`:/data" "${REGISTRY}"/"${YAMLLINT_TAG}" /data && ls -lah
 #
 restart: